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U.S. PATENT AND TRADEMARK OFFICE
Patent Technology Monitoring Team (PTMT)

Patenting In Technology Classes,
Breakout By Organization

Count of 2011 - 2015 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 2011 2012 2013 2014 2015 Total
~INDIVIDUALLY OWNED PATENT 27 27 25 32 34 145
LMK TECHNOLOGIES, LLC 0 0 3 9 4 16
PARKER-HANNIFIN CORPORATION 3 2 3 3 2 13
E. I. DU PONT DE NEMOURS AND COMPANY 2 1 1 1 5 10
HYDAC TECHNOLOGY GMBH 0 1 4 4 1 10
FIBERSPAR CORPORATION 3 0 0 5 1 9
GM GLOBAL TECHNOLOGY OPERATIONS LLC 2 0 2 1 4 9
TECHNIP FRANCE 1 2 2 1 2 8
AIRBUS OPERATIONS GMBH 0 3 1 1 2 7
EATON CORPORATION 2 0 2 0 3 7
LMK ENTERPRISES, INC. 3 3 1 0 0 7
NATIONAL OILWELL VARCO DENMARK I/S 0 1 2 0 4 7
PROTECTIVE INDUSTRIES, INC. 1 0 1 3 2 7
GENERAL ELECTRIC COMPANY 0 3 1 1 1 6
GE OIL & GAS UK LIMITED 0 0 0 0 5 5
IBIDEN CO., LTD. 0 1 0 1 3 5
PERMA-LINER INDUSTRIES, LLC 0 0 1 2 2 5
RAGNER TECHNOLOGY CORPORATION 0 0 0 1 4 5
ROBERT BOSCH GMBH 0 1 0 2 2 5
SHONAN GOSEI-JUSHI SEISAKUSHO K.K. 0 2 1 0 2 5
STATS (UK) LIMITED 2 1 0 0 2 5
W.E. HALL COMPANY, INC. 0 0 2 1 2 5
WELLSTREAM INTERNATIONAL LIMITED 2 2 1 0 0 5



PTMT Contacts

Questions regarding these reports should be directed to:

U.S. Patent and Trademark Office
Electronic Information Products Division - PTMT
P.O Box 1450
Alexandria VA 22313-1450

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

address of PTMT pages at the USPTO Web Site: http://www.uspto.gov/web/offices/ac/ido/oeip/taf/reports.htm
selected PTMT files available for download at : http://www.uspto.gov/web/offices/ac/ido/oeip/taf/data/


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