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

Patenting In Technology Classes,
Breakout By Organization

Count of 2008 - 2012 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 2008 2009 2010 2011 2012 Total
CORNING INCORPORATED 11 12 16 20 12 71
SCHOTT AG 6 17 12 10 10 55
ASAHI GLASS COMPANY, LTD. 9 10 5 9 13 46
HOYA CORPORATION 2 13 7 8 8 38
TDK CORPORATION 9 8 9 4 6 36
OHARA INC. 0 1 5 12 10 28
MURATA MANUFACTURING CO., LTD. 11 7 4 0 4 26
NGK INSULATORS LTD. 6 5 7 3 5 26
SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEEN 3 1 3 3 16 26
~INDIVIDUALLY OWNED PATENT 6 5 2 3 7 23
KYOCERA CORPORATION 3 3 5 4 4 19
GUARDIAN INDUSTRIES CORP. 0 8 3 2 1 14
KABUSHIKI KAISHA OHARA 6 3 1 2 2 14
IVOCLAR VIVADENT AG 2 0 4 4 3 13
PPG INDUSTRIES OHIO INC. 2 3 6 0 2 13
NIPPON SHEET GLASS CO., LTD. 2 4 4 1 1 12
KONICA MINOLTA OPTO, INC 0 2 4 5 0 11
3M INNOVATIVE PROPERTIES COMPANY 1 4 3 2 0 10
EUROKERA 3 3 0 0 4 10
NIPPON ELECTRIC GLASS COMPANY LIMITED 1 3 1 4 1 10
SAINT-GOBAIN GLASS FRANCE 0 2 2 2 4 10
FERRO CORPORATION 0 3 4 0 2 9
HITACHI METALS LTD. 0 0 5 4 0 9
GENERAL ELECTRIC COMPANY 0 1 2 2 2 7
HERAEUS QUARZGLAS GMBH & CO. KG 0 1 2 3 1 7
KENNAMETAL INC. 4 0 1 0 2 7
REFRACTORY INTELLECTUAL PROPERTY GMBH & CO. KG 0 2 0 3 2 7
TOTO, LTD. 2 1 3 0 1 7
SAMSUNG ELECTRO-MECHANICS CO., LTD. 0 1 2 1 2 6
SUMITOMO ELECTRIC INDUSTRIES, LTD. 2 0 2 0 2 6
TOSHIBA CORPORATION 0 3 1 1 1 6
AVANSTRATE INC. 0 0 3 1 1 5
PANASONIC CORPORATION 0 0 1 3 1 5
SAINT-GOBAIN CERAMICS & PLASTICS, INC. 1 1 1 1 1 5
SAINT-GOBAIN TECHNICAL FABRICS EUROPE 0 1 2 0 2 5
SIEMENS AKTIENGESELLSCHAFT 0 0 0 2 3 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/


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