Inventor
TSUZUKI AKIRA
JP31 patents
⚠️ This page may combine multiple inventors who share the name “TSUZUKI AKIRA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CITIZEN WATCH CO LTD
17 patentsUS4430648AFeb 7, 1984
Combination matrix array display and memory system
CITIZEN WATCH CO LTD163 citations99
US4345248AAug 17, 1982
Liquid crystal display device with write-in capability
CITIZEN WATCH CO LTD234 citations99
US4663670AMay 5, 1987
Television receiver having a liquid crystal display device
CITIZEN WATCH CO LTD68 citations95
US4652932AMar 24, 1987
Liquid crystal display television receiver
CITIZEN WATCH CO LTD93 citations95
US4443062AApr 17, 1984
Multi-layer display device with nonactive display element groups
CITIZEN WATCH CO LTD59 citations95
US4646158AFeb 24, 1987
Liquid crystal television receiver
CITIZEN WATCH CO LTD107 citations93
US4345612AAug 24, 1982
Anesthetic gas control apparatus
CITIZEN WATCH CO LTD130 citations92
US4100540AJul 11, 1978
Method of driving liquid crystal matrix display device to obtain maximum contrast and reduce power consumption
CITIZEN WATCH CO LTD35 citations92
US4244043AJan 6, 1981
Frequency division system
CITIZEN WATCH CO LTD38 citations89
US4232510ANov 11, 1980
Timepiece
CITIZEN WATCH CO LTD22 citations82
US4264967AApr 28, 1981
Unit time producing system
CITIZEN WATCH CO LTD21 citations81
US4389728AJun 21, 1983
Frequency divider
CITIZEN WATCH CO LTD12 citations74
US4356483AOct 26, 1982
Matrix drive system for liquid crystal display
CITIZEN WATCH CO LTD14 citations74
US4465999AAug 14, 1984
Matrix driving method for electro-optical display device
CITIZEN WATCH CO LTD19 citations73
US4241435ADec 23, 1980
Electronic timepiece oscillator circuit
CITIZEN WATCH CO LTD9 citations73
US4024416AMay 17, 1977
Method for controlling frequency of electrical oscillations and frequency standard for electronic timepiece
CITIZEN WATCH CO LTD13 citations73
US4300137ANov 10, 1981
Matrix driving method for electro-optical display device
CITIZEN WATCH CO LTD4 citations63
MENICON CO LTD
8 patentsUS6121327ASep 19, 2000
Contact lens disinfecting solution
MENICON CO LTD84 citations95
US6544953B2Apr 8, 2003
Ophthalmic composition
MENICON CO LTD20 citations92
US6242551B1Jun 5, 2001
Polymeric colorant and colored material for ocular lens using the colorant
MENICON CO LTD33 citations92
US5919742AJul 6, 1999
Contact lens cleaning material formed of a polymer
MENICON CO LTD25 citations92
US6177480B1Jan 23, 2001
Agent for contact lenses
MENICON CO LTD17 citations84
US6417144B2Jul 9, 2002
Solution for contact lenses
MENICON CO LTD11 citations73
US6320008B2Nov 20, 2001
Polymeric colorant and colored material for ocular lens using the colorant
MENICON CO LTD12 citations73
US6806243B2Oct 19, 2004
Ophthalmic solution and contact lens solution
MENICON CO LTD12 citations69
TOYO CONTACT LENS CO LTD
3 patentsUS4259202AMar 31, 1981
Cleaning and preservative solution for contact lenses
TOYO CONTACT LENS CO LTD50 citations92
US4500441AFeb 19, 1985
Contact lens cleaning and storage composition
TOYO CONTACT LENS CO LTD46 citations90
US4440662AApr 3, 1984
Cleaning composition for contact lenses
TOYO CONTACT LENS CO LTD44 citations86