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[Search a list of Patent Appplications for class 501]  Class   501COMPOSITIONS: CERAMIC
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   [List of Patents for class 501 subclass 1]  1           CERAMIC COMPOSITIONS
   [List of Patents for class 501 subclass 2]  2           Subclass 2 indent level is 1 Devitrified glass-ceramics
    [List of Patents for class 501 subclass 3]  3           Subclass 3 indent level is 2 Halogen containing crystalline phase (e.g., fluormica, etc.)
    [List of Patents for class 501 subclass 4]  4           Subclass 4 indent level is 2 Silica containing crystalline phase (e.g., stuffed quartz, crystobalite, etc.)
   [List of Patents for class 501 subclass 5]  5           Subclass 5 indent level is 2 Binary, ternary, quaternary, etc., metal silicate crystalline phase (e.g., mullite, diopside, sphene, plagioclase, slagcerams free of alumina, etc.)
    [List of Patents for class 501 subclass 10]  10           Subclass 10 indent level is 2 Nonsilica and nonsilicate crystalline phase (e.g., spinel, barium titanate, etc.)
   [List of Patents for class 501 subclass 11]  11           Subclass 11 indent level is 1 Glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions
    [List of Patents for class 501 subclass 12]  12           Subclass 12 indent level is 2 Made by gel route
    [List of Patents for class 501 subclass 13]  13           Subclass 13 indent level is 2 Radiation color change responsive
   [List of Patents for class 501 subclass 14]  14           Subclass 14 indent level is 2 Enamels, glazes, or fusion seals (e.g., raw, fritted, or calcined ingredients)
    [List of Patents for class 501 subclass 15]  15           Subclass 15 indent level is 3 Fusion seals (frit plus material other than glass)
    [List of Patents for class 501 subclass 16]  16           Subclass 16 indent level is 3 Plural diverse frits
   [List of Patents for class 501 subclass 17]  17           Subclass 17 indent level is 3 Frit plus material other than glass (e.g., color, opacifier, mill additions, etc.)
   [List of Patents for class 501 subclass 21]  21           Subclass 21 indent level is 3 Chemically specified frit compositions
   [List of Patents for class 501 subclass 22]  22           Subclass 22 indent level is 4 Lead containing
    [List of Patents for class 501 subclass 23]  23           Subclass 23 indent level is 5 And titanium or zirconium
    [List of Patents for class 501 subclass 24]  24           Subclass 24 indent level is 4 Phosphorous containing
    [List of Patents for class 501 subclass 25]  25           Subclass 25 indent level is 4 Halogen containing
    [List of Patents for class 501 subclass 26]  26           Subclass 26 indent level is 4 Zinc containing
   [List of Patents for class 501 subclass 27]  27           Subclass 27 indent level is 2 Glass batch forming compositions (i.e., glass batch compositions)
    [List of Patents for class 501 subclass 28]  28           Subclass 28 indent level is 3 Slag containing
    [List of Patents for class 501 subclass 29]  29           Subclass 29 indent level is 3 Pellet or agglomerate containing
    [List of Patents for class 501 subclass 30]  30           Subclass 30 indent level is 3 Halogen containing
    [List of Patents for class 501 subclass 31]  31           Subclass 31 indent level is 3 Uncombined silica containing (e.g., sand)
    [List of Patents for class 501 subclass 32]  32           Subclass 32 indent level is 2 Glass and material other than glass (e.g., crystal glass, opal glass, etc.)
   [List of Patents for class 501 subclass 33]  33           Subclass 33 indent level is 2 Beads
    [List of Patents for class 501 subclass 34]  34           Subclass 34 indent level is 3 Reflective
   [List of Patents for class 501 subclass 35]  35           Subclass 35 indent level is 2 Fibers
    [List of Patents for class 501 subclass 39]  39           Subclass 39 indent level is 2 Pore-forming
    [List of Patents for class 501 subclass 40]  40           Subclass 40 indent level is 2 Nonoxide glasses (e.g., fluoride glasses, etc.)
   [List of Patents for class 501 subclass 41]  41           Subclass 41 indent level is 2 Nonsilicate oxide glasses
    [List of Patents for class 501 subclass 42]  42           Subclass 42 indent level is 3 Germanium containing
   [List of Patents for class 501 subclass 43]  43           Subclass 43 indent level is 3 Halogen containing
    [List of Patents for class 501 subclass 44]  44           Subclass 44 indent level is 4 Fluorine and phosphorus containing
   [List of Patents for class 501 subclass 45]  45           Subclass 45 indent level is 3 Phosphorus containing
    [List of Patents for class 501 subclass 46]  46           Subclass 46 indent level is 4 And titanium, zirconium, vanadium, tungsten, or molybdenum
    [List of Patents for class 501 subclass 47]  47           Subclass 47 indent level is 4 And boron
    [List of Patents for class 501 subclass 48]  48           Subclass 48 indent level is 4 And aluminum or beryllium
   [List of Patents for class 501 subclass 49]  49           Subclass 49 indent level is 3 Boron containing
   [List of Patents for class 501 subclass 53]  53           Subclass 53 indent level is 2 Silica containing
    [List of Patents for class 501 subclass 54]  54           Subclass 54 indent level is 3 More than 90 percent by weight silica
   [List of Patents for class 501 subclass 55]  55           Subclass 55 indent level is 3 40 percent - 90 percent by weight silica
   [List of Patents for class 501 subclass 56]  56           Subclass 56 indent level is 4 And halogen or nitrogen
   [List of Patents for class 501 subclass 57]  57           Subclass 57 indent level is 5 Fluorine
   [List of Patents for class 501 subclass 58]  58           Subclass 58 indent level is 6 And boron
    [List of Patents for class 501 subclass 59]  59           Subclass 59 indent level is 7 And aluminum
   [List of Patents for class 501 subclass 60]  60           Subclass 60 indent level is 4 And lead
    [List of Patents for class 501 subclass 61]  61           Subclass 61 indent level is 5 And boron
    [List of Patents for class 501 subclass 62]  62           Subclass 62 indent level is 5 And aluminum
    [List of Patents for class 501 subclass 63]  63           Subclass 63 indent level is 4 And phosphorus, niobium, or tantalum
    [List of Patents for class 501 subclass 64]  64           Subclass 64 indent level is 4 And yttrium or rare earth (i.e., elements with atomic numbers 39 or 57-71)
   [List of Patents for class 501 subclass 65]  65           Subclass 65 indent level is 4 And boron
   [List of Patents for class 501 subclass 66]  66           Subclass 66 indent level is 5 And aluminum
    [List of Patents for class 501 subclass 67]  67           Subclass 67 indent level is 6 And zinc or zirconium
   [List of Patents for class 501 subclass 68]  68           Subclass 68 indent level is 4 And aluminum or iron compound
    [List of Patents for class 501 subclass 72]  72           Subclass 72 indent level is 4 And divalent metal oxide (e.g., oxides of zinc, cadmium, beryllium, alkaline earth metal, magnesium, etc.)
   [List of Patents for class 501 subclass 73]  73           Subclass 73 indent level is 3 Less than 40 percent by weight silica
   [List of Patents for class 501 subclass 74]  74           Subclass 74 indent level is 4 And lead
   [List of Patents for class 501 subclass 75]  75           Subclass 75 indent level is 5 And boron
    [List of Patents for class 501 subclass 76]  76           Subclass 76 indent level is 6 And zinc
   [List of Patents for class 501 subclass 77]  77           Subclass 77 indent level is 4 And boron
    [List of Patents for class 501 subclass 78]  78           Subclass 78 indent level is 5 And rare earth (i.e., elements with atomic number 39 or 57-71)
    [List of Patents for class 501 subclass 79]  79           Subclass 79 indent level is 5 And zinc
   [List of Patents for class 501 subclass 80]  80           Subclass 80 indent level is 1 Pore-forming
   [List of Patents for class 501 subclass 81]  81           Subclass 81 indent level is 2 By use of organic combustible material
   [List of Patents for class 501 subclass 82]  82           Subclass 82 indent level is 3 Of resin or vegetable origin material
    [List of Patents for class 501 subclass 83]  83           Subclass 83 indent level is 4 Of cellulosic material
    [List of Patents for class 501 subclass 84]  84           Subclass 84 indent level is 2 By gas blowing, foaming agent, or in situ reactive gas generation
    [List of Patents for class 501 subclass 85]  85           Subclass 85 indent level is 2 By volatilizing or heat expansion of water or other noncombustible material
    [List of Patents for class 501 subclass 86]  86           Subclass 86 indent level is 1 Synthetic precious stones (e.g., single crystals, etc.)
   [List of Patents for class 501 subclass 87]  87           Subclass 87 indent level is 1 Carbide or oxycarbide containing
   [List of Patents for class 501 subclass 88]  88           Subclass 88 indent level is 2 Silicon carbide
    [List of Patents for class 501 subclass 89]  89           Subclass 89 indent level is 3 And aluminum compound
    [List of Patents for class 501 subclass 90]  90           Subclass 90 indent level is 3 And carbonaceous material
    [List of Patents for class 501 subclass 91]  91           Subclass 91 indent level is 3 And different carbide
    [List of Patents for class 501 subclass 92]  92           Subclass 92 indent level is 3 And boride, silicide, nitride, or oxynitride
    [List of Patents for class 501 subclass 93]  93           Subclass 93 indent level is 2 Plural carbides (i.e., carbides of plural metals) containing
   [List of Patents for class 501 subclass 94]  94           Subclass 94 indent level is 1 Refractory
   [List of Patents for class 501 subclass 95.1]  95.1           Subclass 95.1 indent level is 2 Fiber or fiber containing
   [List of Patents for class 501 subclass 96.1]  96.1           Subclass 96.1 indent level is 2 Boride, silicide, nitride, oxynitride, carbonitride, or oxycarbonitride containing