CPC Definition - Subclass B28D

Last Updated Version: 2020.05
WORKING STONE OR STONE-LIKE MATERIALS
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Working brittle material by laser beam

B23K 26/40, B23K 2103/50

Working by grinding or polishing

B24

Shaping clay or other ceramic compositions, slag, or mixtures containing cementitious material, e.g. plaster

B28B

Forming contours for artistic purposes, sculpturing

B44B

Glass manufacture, shaping, or supplementary processes

C03B

After-treatment of mortars, concrete, artificial stone or ceramics; treatment of natural stone

C04B 41/00

Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces

E01C 23/00

Machinery for, or methods of, mining or quarrying

E21C

Processes or apparatus adapted for the manufacture or treatment of semiconductor devices

H01L 21/00

Working stone or stone-like materials, e.g. brick, concrete {or glass}, not provided for elsewhere; Machines, devices, tools therefor (fine working of gems, jewels, crystals B28D 5/00; working by grinding or polishing B24; devices or means for dressing or conditioning abrasive surfaces B24B 53/00)
References
Limiting references

This place does not cover:

Rotary drilling machines in general

B23B

Working by grinding or polishing

B24

Portable percussive machines or tools

B25D

Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Fine working of gems, jewels, crystals

B28D 5/00

Rotary drilling machines

E21B 3/00

Drill bits for earth or rock drilling

E21B 10/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

Meat or bone saws

A22B 5/20

Surgical saws

A61B 17/14

Saws for dentistry

A61C 3/12

Sawing in general, sawing metal

B23D 45/00 - B23D 65/04

Grinding edges of lenses

B24B 9/14

Grinders for cutting-off

B24B 27/06

Sawing wood or similar material

B27B

Forming contours for artistic purposes, sculpturing

B44B

Bits for picks or pick-holders for mining or quarrying

E21C 35/18

Dressing mill discs or rollers (dressing the tools of sawing machines or sawing devices B23D 63/00; treating the cutting members of cutting machines to facilitate cutting B26D 7/08)
References
Limiting references

This place does not cover:

Dressing the tools of sawing machines or sawing devices

B23D 63/00

Treating the cutting members of cutting machines to facilitate cutting

B26D 7/08

Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor (working by grinding or polishing B24; for artistic purposes B44B)
References
Limiting references

This place does not cover:

Devices for removing chips fitted to machine tools in general

B23Q 11/0042

Grinding; Polishing

B24

Fine working of gems, jewels, crystals for artistic purposes

B44B

Multi-step processes for fine working semiconductor material

H01L 21/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

Working brittle material by laser beam

B23K 26/40, B23K 2103/50

Processes or apparatus adapted for the manufacture or treatment of semiconductor devices

H01L 21/00

Accessories specially adapted for use with machines or devices of the preceding groups {(B28D 5/0058 takes precedence)}
References
Limiting references

This place does not cover:

Sawing stone with a circular saw blade or disc with the work mounted on a carriage

B28D 1/047

Devices for removing chips fitted to machine tools in general

B23Q 11/0042

Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Breaking gems, jewels, crystals by bringing the workpiece into contact with a suitably shaped rigid body which remains stationary during breaking

B28D 5/0041

Means for supporting or holding work during breaking of gems, jewels, crystals

B28D 5/0052

Accessories specially adapted for use with machines for fine working of gems, jewels, crystals

B28D 5/0058