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U.S. PATENT AND TRADEMARK OFFICE
Office of Electronic Information Products
Patent Technology Monitoring Division (PTMD)

Patenting In Technology Classes,
Breakout By Organization

Count of 1969 - 2004 Utility Patent Grants,
By Calendar Year of Grant
With Patent Counts Based on Primary Patent Classification

- Explanation of Data -

Rank Ordered Listing of Organizations Receiving 5 or More Utility Patents During the Period
Having Primary Classification In

Class 404, Road Structure, Process, or Apparatus

( technology class is determined by the primary classification assigned to the patent- see 'Explanation of Data' )
( patent ownership is determined by the first-named assignee listed on a patent )

The following table displays first-named assignees and counts of their associated patents, as distributed by the year of patent grant
First-Named Assignee 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 Total
~Individually Owned Patent 35 33 59 33 15 51 48 34 33 43 21 31 36 46 24 27 28 45 65 43 72 70 79 52 72 57 60 50 51 46 57 63 48 66 56 71 1720
ALLEN ENGINEERING CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 1 2 0 1 1 3 5 1 1 0 0 1 1 3 1 5 2 2 5 6 0 0 1 0 42
ACME HIGHWAY PRODUCTS CORP. 3 3 6 3 1 1 5 1 1 1 2 0 0 4 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 32
CMI CORPORATION 0 3 2 0 2 0 2 2 0 1 2 2 1 1 0 0 0 0 2 1 0 0 3 0 0 1 2 2 0 1 0 1 1 0 0 0 32
CATERPILLAR INC. 0 0 2 2 0 2 1 1 0 1 0 0 1 2 1 0 0 0 0 0 0 0 0 0 2 1 0 0 1 0 2 3 1 0 1 3 27
D. S. BROWN COMPANY 3 1 2 1 5 0 2 0 3 1 0 0 1 0 0 1 0 0 0 0 0 2 2 0 0 0 0 0 0 0 1 0 0 0 0 0 25
MINNESOTA MINING AND MANUFACTURING COMPANY 0 1 0 1 0 1 1 0 1 1 0 0 0 0 0 0 2 1 0 0 1 1 3 1 0 1 3 0 3 2 1 0 0 0 0 0 25
BLAW-KNOX CONSTRUCTION EQUIPMENT COMPANY, INC. 0 0 0 3 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 2 1 1 0 1 1 4 1 1 2 4 23
CATERPILLAR PAVING PRODUCTS INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 3 2 2 3 0 0 3 1 1 1 3 1 22
ENERGY ABSORPTION SYSTEMS, INC. 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 1 0 0 1 0 2 1 2 2 0 1 1 2 0 3 3 0 22
INGERSOLL-RAND COMPANY 0 0 2 0 1 0 0 0 0 0 1 0 1 1 0 0 0 1 0 1 0 0 0 1 1 0 0 6 0 1 0 1 0 1 1 1 21
BARBER-GREENE CO. 0 2 0 3 1 2 2 0 1 0 0 0 0 0 0 0 0 0 1 0 2 2 2 0 1 0 0 0 0 0 0 0 0 0 0 0 19
M-B-W., INC. 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 3 1 3 1 2 1 2 2 0 0 0 0 0 0 0 0 1 19
WACKER-WERKE KG 0 1 1 0 0 1 1 1 0 0 0 1 0 0 1 0 0 0 0 1 0 0 0 0 0 0 2 0 0 0 3 0 3 3 0 0 19
TRAFFIX DEVICES, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 1 0 2 1 1 1 4 3 2 17
ASTEC INDUSTRIES, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 0 1 2 3 2 1 2 0 2 0 0 0 16
CEDARAPIDS, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 0 0 2 1 1 2 0 2 3 0 1 0 0 15
REXNORD INC. 2 5 1 3 1 0 1 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 15
TEXAS A&M UNIVERSITY SYSTEM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 0 3 2 2 0 1 0 2 1 1 0 0 15
WACKER CORPORATION 0 0 0 0 0 2 0 0 0 0 0 0 1 1 0 0 0 2 1 0 0 0 0 1 0 0 0 0 0 0 3 0 1 3 0 0 15
AMERACE CORPORATION 1 0 1 0 0 2 0 0 0 0 3 3 0 1 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 14
BARRIER SYSTEMS, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 0 2 0 1 0 0 0 0 0 0 5 2 0 13
FELT PRODUCTS MFG. CO 0 0 0 0 1 3 3 1 1 3 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13
PAC-TEC, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 0 2 1 0 1 0 1 0 0 1 1 1 1 1 0 13
GUNTERT & ZIMMERMAN CONSTRUCTION DIV., INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 3 0 1 1 1 2 1 0 11
ABG-WERKE G.M.B.H. 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 1 3 1 0 0 1 0 0 0 0 0 0 0 0 0 10
DELAWARE CAPITAL FORMATION, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 2 1 3 1 10
PHILLIPS PETROLEUM COMPANY 0 1 3 0 0 0 2 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10
COLAS S.A. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2 3 0 0 0 1 1 0 0 1 0 0 9
LOSENHAUSEN MASCHINENBAU AG 1 1 0 1 2 1 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9
CARON COMPACTOR CO. 0 0 1 0 1 1 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 1 8
JOSEPH VOGELE AG 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 1 0 2 2 0 0 0 0 0 8
KOEHRING CORPORATION 0 0 0 0 0 2 1 0 0 1 0 0 0 1 2 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
KOEHRING GMBH-BOMAG DIVISION 0 0 0 0 0 0 3 2 1 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
POWER CURBERS, INC. 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 0 0 1 0 0 0 2 8
SAKAI HEAVY INDUSTRIES LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 2 0 1 8
STIMSONITE CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 2 2 0 1 0 0 1 0 0 0 0 8
ABG ALLGEMEINE BAUMASCHINEN-GESELLSCHAFT MBH 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 4 1 1 0 7
CARSONITE INTERNATIONAL CORPORATION, A DIVISION OF AMETEK 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 0 0 0 1 0 0 1 0 0 1 0 0 0 1 0 0 0 0 7
CUTLER REPAVING INC. 0 0 0 0 0 2 0 0 2 1 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
GENCORP INC. 1 0 0 0 1 1 1 0 2 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
HYSTER COMPANY 2 1 0 0 0 0 2 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
MILLER FORMLESS CO., INC. 0 0 1 0 2 1 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 7
TAISEI ROAD CONSTRUCTION CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
UNITED STATES OF AMERICA, ARMY 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 1 3 0 0 0 0 0 0 0 0 1 7
3M INNOVATIVE PROPERTIES COMPANY 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 2 0 6
AUTOSTRADE - CONSESSIONI E COSTRUZIONI AUTOSTRADE S.P.A. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 2 1 0 0 0 1 1 0 6
BOMAG GMBH & CO. OHG 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 1 1 0 0 0 0 2 0 6
DOW CHEMICAL COMPANY 1 1 0 0 1 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
DYNAPAC MASKIN AKTIEBOLAG 0 0 0 0 0 0 1 0 0 0 2 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
EDOCO TECHNICAL PRODUCTS, INC. 2 0 1 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
GOMACO CORPORATION 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 2 0 0 0 0 0 2 0 0 0 0 0 6
OWENS-CORNING FIBERGLAS CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 6
RAYGO INC. 0 1 0 1 0 1 1 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
ROBERT MCGREGOR SONS LIMITED 0 1 1 1 1 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
STONE CONSTRUCTION EQUIPMENT, INC. 0 0 0 0 0 0 1 0 0 1 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 1 6
UNITED STATES OF AMERICA, NAVY 0 1 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 6
VON ROLL AG 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 1 1 0 1 0 0 0 0 0 0 0 0 0 0 6
WACKER CONSTRUCTION EQUIPMENT AG 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 4 6
WATSON-BOWMAN ASSOCIATES, INC. 0 0 0 0 2 1 1 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
WIRTGEN GMBH 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 3 2 0 6
ACO SEVERIN AHLMANN GMBH & CO. KG 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 2 1 0 0 0 0 0 0 0 0 5
ATLANTIC RICHFIELD COMPANY 0 0 0 0 0 0 0 2 0 0 0 1 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
ENTREPRISE JEAN LEFEBVRE 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 2 1 0 0 0 0 0 0 1 0 0 0 0 5
F. VON LANGSDORFF LICENSING LIMITED 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 1 1 0 1 0 0 0 5
FIRMA FRIEDRICH MAURER SOEHNE 0 0 2 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
FLEXSTAKE, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2 0 1 0 0 1 0 0 0 0 5
ILLINOIS TOOL WORKS INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 4 5
KOBER AG 0 0 0 0 0 0 1 0 0 1 0 1 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
NIIGATA ENGINEERING CO., LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 1 1 0 0 0 5
PRECISION COVER SYSTEMS, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 2 5
RAYMOND LEE ORGANIZATION 0 0 0 0 0 1 2 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
RENNER COMPANY 1 0 0 0 2 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
SOUTH AFRICAN INVENTIONS DEVELOPMENT CORPORATION 0 0 0 1 0 1 0 2 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
W. R. GRACE & CO.-CONN. 0 2 1 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
WHITE CONSOLIDATED INDUSTRIES, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 2 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 5


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