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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 507, Earth Boring, Well Treating, and Oil Field Chemistry

( 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
HALLIBURTON ENERGY SERVICES, INC. 46 29 52 39 30 196
BAKER HUGHES INCORPORATED 26 14 13 16 15 84
SCHLUMBERGER TECHNOLOGY CORPORATION 24 12 10 17 14 77
M-I L.L.C 9 10 7 3 4 33
CLEARWATER INTERNATIONAL LLC. 7 3 6 5 2 23
NALCO COMPANY 9 5 4 2 3 23
~INDIVIDUALLY OWNED PATENT 4 3 2 4 4 17
BASF SE 3 3 1 1 3 11
SUN DRILLING PRODUCTS CORP. 1 2 5 0 3 11
INTEVEP, S.A. 4 3 0 0 2 9
SAUDI ARABIAN OIL COMPANY 1 0 2 1 5 9
DORF KETAL SPECIALITY CATALYSTS, LLC 2 5 1 0 0 8
E. I. DU PONT DE NEMOURS AND COMPANY 0 2 1 3 2 8
UNIVERSITY OF TEXAS 1 3 1 2 1 8
ELEMENTIS SPECIALTIES, INC. 3 1 1 2 0 7
EXXONMOBIL UPSTREAM RESEARCH COMPANY 1 3 2 1 0 7
RHODIA OPERATIONS 2 0 1 2 2 7
LAMBERTI S.P.A. 2 0 1 0 3 6
SHELL OIL COMPANY 0 0 1 3 2 6
3M INNOVATIVE PROPERTIES COMPANY 0 2 1 1 1 5
AKZO NOBEL NV 0 3 0 2 0 5
CONOCOPHILLIPS COMPANY 0 0 1 3 1 5
OXANE MATERIALS, INC. 0 3 0 2 0 5
STEPAN COMPANY 4 0 0 1 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