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

Patenting In Technology Classes,
Breakout By Organization

Count of 2009 - 2013 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 2009 2010 2011 2012 2013 Total
CORNING INCORPORATED 12 16 20 12 14 74
SCHOTT AG 17 12 10 10 10 59
HOYA CORPORATION 13 7 8 8 14 50
ASAHI GLASS COMPANY, LTD. 10 5 9 13 12 49
TDK CORPORATION 8 9 4 6 9 36
OHARA INC. 1 5 12 10 3 31
SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEEN 1 3 3 16 8 31
MURATA MANUFACTURING CO., LTD. 7 4 0 4 11 26
NGK INSULATORS LTD. 5 7 3 5 1 21
~INDIVIDUALLY OWNED PATENT 5 2 3 7 4 21
KYOCERA CORPORATION 3 5 4 4 3 19
IVOCLAR VIVADENT AG 0 4 4 3 4 15
GUARDIAN INDUSTRIES CORP. 8 3 2 1 0 14
NIPPON ELECTRIC GLASS COMPANY LIMITED 3 1 4 1 4 13
KONICA MINOLTA OPTO, INC 2 4 5 0 1 12
NIPPON SHEET GLASS CO., LTD. 4 4 1 1 2 12
PPG INDUSTRIES OHIO INC. 3 6 0 2 1 12
HITACHI METALS LTD. 0 5 4 0 2 11
3M INNOVATIVE PROPERTIES COMPANY 4 3 2 0 1 10
SAINT-GOBAIN GLASS FRANCE 2 2 2 4 0 10
FERRO CORPORATION 3 4 0 2 0 9
KABUSHIKI KAISHA OHARA 3 1 2 2 1 9
AVANSTRATE INC. 0 3 1 1 3 8
GENERAL ELECTRIC COMPANY 1 2 2 2 1 8
KROSAKIHARIMA CORPORATION 0 0 0 4 4 8
EUROKERA 3 0 0 4 0 7
HERAEUS QUARZGLAS GMBH & CO. KG 1 2 3 1 0 7
REFRACTORY INTELLECTUAL PROPERTY GMBH & CO. KG 2 0 3 2 0 7
SAMSUNG ELECTRO-MECHANICS CO., LTD. 1 2 1 2 1 7
TOSHIBA CORPORATION 3 1 1 1 1 7
OCV INTELLECTUAL CAPITAL, LLC 0 2 0 2 2 6
SAINT-GOBAIN TECHNICAL FABRICS EUROPE 1 2 0 2 1 6
SIEMENS AKTIENGESELLSCHAFT 0 0 2 3 1 6
TOSOH CORPORATION 2 0 1 1 2 6
FUJIFILM CORPORATION 0 2 0 1 2 5
PANASONIC CORPORATION 0 1 3 1 0 5
SUMITOMO ELECTRIC INDUSTRIES, LTD. 0 2 0 2 1 5
TOTO, LTD. 1 3 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/tafp.html
selected PTMT files available for download at : http://www.uspto.gov/web/offices/ac/ido/oeip/taf/data/


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