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


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

Patenting In Technology Classes,
Breakout By Organization

Count of 2007 - 2011 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 501, Compositions: Ceramic

( 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 2007 2008 2009 2010 2011 Total
CORNING INCORPORATED 9 11 12 16 20 68
SCHOTT AG 12 6 17 12 10 57
TDK CORPORATION 9 9 8 9 4 39
ASAHI GLASS COMPANY, LTD. 1 9 10 5 9 34
HOYA CORPORATION 4 2 13 7 8 34
NGK INSULATORS LTD. 8 6 5 7 3 29
MURATA MANUFACTURING CO., LTD. 5 11 7 4 0 27
~INDIVIDUALLY OWNED PATENT 5 6 5 2 3 21
OHARA INC. 0 0 1 5 12 18
KYOCERA CORPORATION 2 3 3 5 4 17
KABUSHIKI KAISHA OHARA 4 6 3 1 2 16
NIPPON SHEET GLASS CO., LTD. 4 2 4 4 1 15
GUARDIAN INDUSTRIES CORPORATION 1 0 8 3 2 14
3M INNOVATIVE PROPERTIES COMPANY 3 1 4 3 2 13
IVOCLAR VIVADENT AG 2 2 0 4 4 12
KONICA MINOLTA OPTO, INC 0 0 2 4 5 11
PPG INDUSTRIES OHIO INC. 0 2 3 6 0 11
HITACHI METALS LTD. 1 0 0 5 4 10
NIPPON ELECTRIC GLASS COMPANY LIMITED 1 1 3 1 4 10
SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEEN 0 3 1 3 3 10
FERRO CORPORATION 2 0 3 4 0 9
KENNAMETAL INC. 4 4 0 1 0 9
EUROKERA 1 3 3 0 0 7
HERAEUS QUARZGLAS GMBH & CO. KG 1 0 1 2 3 7
SAINT-GOBAIN GLASS FRANCE 1 0 2 2 2 7
SANYO ELECTRIC CO., LTD. 6 1 0 0 0 7
TOSHIBA CORPORATION 2 0 3 1 1 7
REFRACTORY INTELLECTUAL PROPERTY GMBH & CO. KG 1 0 2 0 3 6
TOTO, LTD. 0 2 1 3 0 6
GENERAL ELECTRIC COMPANY 0 0 1 2 2 5
NGK SPARK PLUG CO., LTD. 3 0 0 0 2 5
SAINT-GOBAIN CERAMICS & PLASTICS, INC. 1 1 1 1 1 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/tafp.html
selected PTMT files available for download at : http://www.uspto.gov/web/offices/ac/ido/oeip/taf/data/


Top

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