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

Patenting In Technology Classes,
Breakout By Organization

Count of 2005 - 2009 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 2005 2006 2007 2008 2009 Total
CORNING INCORPORATED 9 8 9 11 12 49
SCHOTT AG 0 6 12 6 17 41
TDK CORPORATION 5 1 9 9 8 32
MURATA MANUFACTURING CO., LTD. 7 1 5 11 7 31
NGK INSULATORS LTD. 5 4 8 6 5 28
ASAHI GLASS COMPANY, LTD. 2 5 1 9 10 27
HOYA CORPORATION 3 4 4 2 13 26
~INDIVIDUALLY OWNED PATENT 6 4 5 6 5 26
KABUSHIKI KAISHA OHARA 2 7 4 6 3 22
GUARDIAN INDUSTRIES CORPORATION 3 5 1 0 8 17
NIPPON SHEET GLASS CO., LTD. 4 1 4 2 4 15
3M INNOVATIVE PROPERTIES COMPANY 1 4 3 1 4 13
PPG INDUSTRIES OHIO INC. 5 3 0 2 3 13
SCHOTT GLASWERKE 7 5 1 0 0 13
KENNAMETAL INC. 2 2 4 4 0 12
KYOCERA CORPORATION 2 2 2 3 3 12
NGK SPARK PLUG CO., LTD. 4 3 3 0 0 10
NIPPON ELECTRIC GLASS COMPANY LIMITED 4 1 1 1 3 10
SAINT-GOBAIN CERAMICS & PLASTICS, INC. 3 4 1 1 1 10
E. I. DU PONT DE NEMOURS AND COMPANY 4 4 0 1 0 9
EUROKERA 1 1 1 3 3 9
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 2 5 1 1 0 9
SANYO ELECTRIC CO., LTD. 0 2 6 1 0 9
FERRO-CORPORATION 1 2 2 0 3 8
TOSHIBA CORPORATION 0 2 2 0 3 7
KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY 1 2 3 0 0 6
SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEEN 0 2 0 3 1 6
COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH 0 3 1 1 0 5
HERAEUS QUARZGLAS GMBH & CO. KG 0 3 1 0 1 5
IVOCLAR VIVADENT AG 0 1 2 2 0 5
KONINKLIJKE PHILIPS ELECTRONICS N.V. 1 1 0 1 2 5
MORGAN CRUCIBLE COMPANY PLC 1 2 1 1 0 5
REFRACTORY INTELLECTUAL PROPERTY GMBH & CO. KG 0 2 1 0 2 5
SAINT-GOBAIN GLASS FRANCE 1 1 1 0 2 5
SAMSUNG ELECTRO-MECHANICS CO., LTD. 4 0 0 0 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/


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