Katubumi Koyanagi

Person

Tenri, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Thin-film magnetic head
- Patent number 4,739,431
- Issue date Apr 19, 1988
- Sharp Kabushiki Kaisha
- Syuhei Yasuda
- G11 - INFORMATION STORAGE
Information Patent Grant
Constant current/constant voltage drive for an electrochromic displ...
- Patent number 4,535,329
- Issue date Aug 13, 1985
- Sharp Kabushiki Kaisha
- Katubumi Koyanagi
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Manufacture of display electrode layers in electrochromic display d...
- Patent number 4,430,182
- Issue date Feb 7, 1984
- Sharp Kabushiki Kaisha
- Tadanori Hishida
- G02 - OPTICS
Information Patent Grant
Charge transfer type electrochromic display devices
- Patent number 4,420,749
- Issue date Dec 13, 1983
- Sharp Kabushiki Kaisha
- Katubumi Koyanagi
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Electrochromic display devices
- Patent number 4,399,436
- Issue date Aug 16, 1983
- Hamada; Hiroshi
- Hiroshi Hamada
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Electrochromic display driver with faculties of stabilizing colorat...
- Patent number 4,364,040
- Issue date Dec 14, 1982
- Sharp Kabushiki Kaisha
- Hiroshi Take
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Electric memory detector in an ECD driver
- Patent number 4,300,138
- Issue date Nov 10, 1981
- Sharp Kabushiki Kaisha
- Hiroshi Nakauchi
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Combined constant potential and constant voltage driving technique...
- Patent number 4,295,138
- Issue date Oct 13, 1981
- Sharp Corporation
- Hiroshi Nakauchi
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Segmented bargraph display by an electrochromic display device
- Patent number 4,247,855
- Issue date Jan 27, 1981
- Sharp Kabushiki Kaisha
- Hisashi Uede
- G02 - OPTICS
Information Patent Grant
Additional electrode of electrochromic display and refreshing metho...
- Patent number 4,229,080
- Issue date Oct 21, 1980
- Sharp Kabushiki Kaisha
- Hiroshi Take
- G02 - OPTICS

Katubumi Koyanagi

Person

Patents Grantslast 30 patents

Thin-film magnetic head

Constant current/constant voltage drive for an electrochromic displ...

Manufacture of display electrode layers in electrochromic display d...

Charge transfer type electrochromic display devices

Electrochromic display devices

Electrochromic display driver with faculties of stabilizing colorat...

Electric memory detector in an ECD driver

Combined constant potential and constant voltage driving technique...

Segmented bargraph display by an electrochromic display device

Additional electrode of electrochromic display and refreshing metho...