Skip menu navigation Home > Listing of Viewable PTMD Reports > Table of Contents for This Set of Reports


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 2000 - 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 138, Pipes and Tubular Conduits

( 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 2000 2001 2002 2003 2004 Total
~Individually Owned Patent 52 46 34 24 23 179
TOKAI RUBBER INDUSTRIES, LTD. 5 8 8 4 3 28
COFLEXIP 8 5 3 2 3 21
DAYCO PRODUCTS LLC 10 4 1 2 0 17
INSTITUT FRANCAIS DU PETROLE 2 1 3 5 1 12
GOODYEAR TIRE + RUBBER COMPANY 1 3 2 2 2 10
INSITUFORM (NETHERLANDS) B. V. 2 0 1 2 3 8
PARKER-HANNIFIN CORPORATION 2 0 3 0 3 8
TIGERS POLYMER CORPORATION 5 2 0 0 1 8
AEROQUIP VICKERS INTERNATIONAL GMBH 1 0 2 2 2 7
CERTAIN-TEED CORPORATION 0 2 2 1 2 7
SHONAN GOSEI-JUSHI SEISAKUSHO K.K. 5 0 1 1 0 7
TOTAKU INDUSTRIES, INC. 2 3 1 1 0 7
WITZENMANN GMBH METALLSCHLAUCH-FABRIK PFORZHEIM 4 2 1 0 0 7
GENERAL ELECTRIC COMPANY 1 1 1 2 1 6
ITT MANUFACTURING ENTERPRISES, INC. 1 3 1 0 1 6
HYBRITECH POLYMERS 1 4 0 0 0 5
HYDAC TECHNOLOGY GMBH 0 1 1 2 1 5
NKT FLEXIBLES I/S 0 1 1 2 1 5
USUI KOKUSAI SANGYO KABUSHIKI KAISHA 3 2 0 0 0 5
YAZAKI CORP. 2 0 1 1 1 5
YOKOHAMA RUBBER CO., LTD. 3 1 0 1 0 5


PTMD Contacts

Questions regarding these reports should be directed to:

U.S. Patent and Trademark Office
Office of Electronic Information Products - PTMD
MDW 4C18; P.O Box 1450
Alexandria VA 22313-1450

tel: (571) 272-5600
fax: (571) 273-0110
email: oeip@uspto.gov

address of PTMD pages at the USPTO Web Site: http://www.uspto.gov/web/offices/ac/ido/oeip/taf/tafp.html
ftp download of selected PTMD reports and materials from : ftp.uspto.gov/pub/taf/


Top

Skip menu navigation Home > Listing of Viewable PTMD Reports > Table of Contents for This Set of Reports