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


U.S. PATENT AND TRADEMARK OFFICE
Office of Electronic Information Products
Patent Technology Monitoring Division (PTMD)

Patenting In Technology Classes,
Breakout By Organization

Count of 1998 - 2002 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 351, Optics: Eye Examining, Vision Testing and Correcting

( 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 1998 1999 2000 2001 2002 Total
~Individually Owned Patent 83 114 103 87 85 472
NIDEK CO., LTD. 12 17 15 11 8 63
KABUSHIKI KAISHA TOPCON 4 9 8 5 6 32
BAUSCH & LOMB, INC. 8 6 5 5 6 30
CANON KABUSHIKI KAISHA 10 3 6 5 4 28
JOHNSON & JOHNSON VISION CARE, INC. 0 0 4 10 7 21
ESSILOR INTERNATIONAL COMPAGNIE GENERALE D OPTIQUE 4 3 5 5 2 19
NIKON CORPORATION 11 4 1 0 0 16
JOHNSON & JOHNSON VISION PRODUCTS, INC. 5 2 3 4 0 14
CARL ZEISS, INC. 2 1 2 3 5 13
OAKLEY, INC. 4 2 4 3 0 13
MENICON CO., LTD. 1 0 6 3 2 12
HOYA CORPORATION 3 2 3 2 1 11
SEIKO EPSON CORPORATION 3 3 3 2 0 11
SOLA INTERNATIONAL HOLDINGS LTD. 0 2 2 2 5 11
WESLEY-JESSEN CORPORATION 1 2 2 5 1 11
CABOT SAFETY INTERMEDIATE CORPORATION 1 3 3 3 0 10
CONTOUR OPTIK INC. 0 4 3 1 2 10
OCULUS-OPTIKGERATE G.M.B.H. 1 4 0 3 2 10
INNOTECH, INC. 3 5 1 0 0 9
ASAHI KOGAKU KOGYO KABUSHIKI KAISHA 2 0 2 3 1 8
CARL ZEISS JENA GMBH 1 3 1 1 2 8
LASERSIGHT TECHNOLOGIES, INC. 0 1 1 3 3 8
OPTISCHE WERKE G. RODENSTOCK 2 3 1 2 0 8
UNIVERSITY OF ROCHESTER 1 1 1 3 2 8
CARL ZEISS STIFTUNG 1 2 2 0 1 6
MASUNAGA OPTICAL MFG. CO., LTD. 2 1 0 1 2 6
UNITED STATES OF AMERICA, NAVY 0 1 3 0 2 6
VIRTUAL-EYE.COM, INC. 0 1 3 1 1 6
KOWA COMPANY LTD. 1 0 1 2 1 5
LINDBERG A/S 0 1 0 4 0 5
PARETO CORPORATION 1 0 1 3 0 5
VOLK OPTICAL, INC. 3 1 1 0 0 5


PTMD Contacts

Questions regarding these reports should be directed to:

U.S. Patent and Trademark Office
Office of Electronic Information Products - PTMD
PK3- Suite 441; P.O Box 1450
Alexandria VA 22313

tel: (703) 306-2600
fax: (703) 306-2737
email: oeip@uspto.gov

address of PTMD pages at the USPTO Web Site: http://www.uspto.gov/web/offices/ac/ido/oeip/taf/tafp.html
ftp download of selected PTMD reports and materials from : ftp.uspto.gov/pub/taf/


Top

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