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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 1998 - 2002 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 052, Static Structures (e.g., Buildings)

( 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 1998 1999 2000 2001 2002 Total
~Individually Owned Patent 497 466 457 533 435 2388
STEELCASE DEVELOPMENT CORPORATION 0 6 22 23 20 71
OWENS-CORNING FIBERGLAS CORPORATION 6 9 7 4 10 36
STEELCASE INC. 16 13 3 1 0 33
CERTAIN-TEED CORPORATION 2 9 8 8 5 32
HAWORTH, INC. 3 3 5 5 3 19
MITEK HOLDING, INC. 1 6 0 3 5 15
ULTRAFRAME (UK) LIMITED 0 1 5 6 3 15
USG INTERIORS, INC. 2 1 5 3 3 14
BUILDING MATERIALS CORPORATION OF AMERICA 3 3 6 0 0 12
DORMA GMBH & CO. KG. 0 1 5 1 5 12
HERMAN MILLER INC. 0 0 0 5 6 11
SIMPSON STRONG-TIE COMPANY, INC. 2 2 2 3 2 11
TAPCO INTERNATIONAL, INC. 4 2 1 0 3 10
HILTI AKTIENGESELLSCHAFT 1 2 1 2 3 9
SAINT-GOBAIN VITRAGE 2 1 4 2 0 9
SOLATUBE INTERNATIONAL, INC. 0 2 1 3 3 9
GEOMETRICA, INC. 0 2 0 5 1 8
PLASTIC COMPONENTS, INC. 0 1 3 3 1 8
PPG INDUSTRIES OHIO INC. 0 0 1 3 4 8
RITE-HITE HOLDING CORPORATION 0 1 2 3 2 8
UNIVERSITY OF CENTRAL FLORIDA 0 5 1 1 1 8
ANDERSEN CORPORATION 2 0 2 1 2 7
ARMSTRONG WORLD INDUSTRIES, INC. 2 1 3 1 0 7
ASSOCIATED MATERIALS INCORPORATED 2 1 1 0 3 7
BAY MILLS LIMITED 0 3 2 2 0 7
CANON KABUSHIKI KAISHA 0 0 3 3 1 7
HENKEL CORPORATION 0 1 2 3 1 7
ILLINOIS TOOL WORKS INC. 3 1 0 1 2 7
KNOLL, INC. 0 3 1 1 2 7
L.B. (PLASTICS) LIMITED 1 1 0 3 2 7
NICHIHA CORPORATION 0 1 0 4 2 7
TAPCO INTERNATIONAL CORPORATION 0 0 3 2 2 7
TRIM-TEX, INC. 3 1 2 0 1 7
VALINGE ALUMINUM AB 1 1 2 2 1 7
VINYL CORPORATION 1 2 3 1 0 7
WORTHINGTON ARMSTRONG VENTURE 1 0 1 3 2 7
YKK ARCHITECTURAL PRODUCTS INC. 3 2 2 0 0 7
GUARDIAN FIBERGLASS, INC. 0 1 2 2 1 6
HUNTER DOUGLAS, INC. 0 1 1 2 2 6
INTERKAL, INC. 1 0 1 3 1 6
JOHNS MANVILLE INTERNATIONAL, INC. 1 0 1 2 2 6
KELLEY COMPANY, INC. 0 1 2 2 1 6
LUCENT TECHNOLOGIES INC. 0 1 5 0 0 6
PREMARK RWP HOLDINGS, INC. 2 0 0 1 3 6
RESEARCH FOUNDATION OF STATE UNIVERSITY OF NEW YORK 1 0 1 1 3 6
SICO INCORPORATED 0 0 5 1 0 6
VKR HOLDING A/S 0 0 0 3 3 6
ANCHOR WALL SYSTEMS, INC. 3 0 1 1 0 5
BALCO/METALINES, INC. 3 0 2 0 0 5
BRIDGESTONE CORPORATION 1 2 0 1 1 5
BURNS, MORRIS & STEWART LIMITED PARTNERSHIP 0 2 1 0 2 5
CONSTRUCTION SPECIALTIES INC. 1 1 0 0 3 5
DOW CHEMICAL COMPANY 2 0 0 3 0 5
HARDY INDUSTRIES, INC. 1 2 2 0 0 5
KAWNEER COMPANY, INC. 1 2 0 0 2 5
MARTIN MARIETTA MATERIALS, INC. 1 0 4 0 0 5
MCDONNELL DOUGLAS CORP. 4 0 1 0 0 5
MINNESOTA MINING AND MANUFACTURING COMPANY 2 3 0 0 0 5
MM SYSTEMS CORPORATION 1 4 0 0 0 5
N.V. BEKAERT S.A. 0 1 0 3 1 5
NATIONAL GYPSUM COMPANY 4 0 1 0 0 5
ROYAL BUILDING SYSTEMS (CDN) LIMITED 2 1 0 2 0 5
TOMCAT GLOBAL CORPORATION 0 0 4 1 0 5


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