Issued Patents All Time
Showing 426–440 of 440 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4266278 | Portable electronic device equipped with calculation and timekeeping functions | Heihachiro Ebihara, Fukuo Sekiya | 1981-05-05 |
| 4262349 | System for signalling the termination of the lifetime of a battery for electronic timepieces | Fukuo Sekiya, Kazunari Kume | 1981-04-14 |
| 4258431 | Electronic timepiece having an analog display device and a digital display device | Fukuo Sekiya | 1981-03-24 |
| 4250571 | Portable electronic device | Heihachiro Ebihara, Fukuo Sekiya | 1981-02-10 |
| 4246602 | Electronic timepiece | Fukuo Sekiya | 1981-01-20 |
| 4245338 | Time correction system for an electronic timepiece | Fukuo Sekiya | 1981-01-13 |
| 4240150 | Portable timepiece calculator with power savings feature | Heihachiro Ebihara, Fukuo Sekiya | 1980-12-16 |
| 4227192 | Drive system for liquid crystal display device | Heihachiro Ebihara, Fukuo Sekiya | 1980-10-07 |
| 4224531 | Data transfer circuit | Heihachiro Ebihara, Fukuo Sekiya | 1980-09-23 |
| 4217654 | Portable electronic device equipped with timekeeping and calculation functions | Heihachiro Ebihara, Fukuo Sekiya | 1980-08-12 |
| 4198579 | Input circuit for portable electronic devices | Heihachiro Ebihara, Fukuo Sekiya | 1980-04-15 |
| 4193255 | Electronic timepiece with calendar function | Heihachiro Ebihara, Fukuo Sekiya | 1980-03-18 |
| 4192135 | Portable electronic device | Heihachiro Ebihara, Fukuo Sekiya | 1980-03-11 |
| 4190892 | Zero suppressing system for electronic device | Heihachiro Ebihara, Fukuo Sekiya | 1980-02-26 |
| 4181884 | Rotational position detection device using a reference mark and two sensors spaced integer times apart | Shinji Shirasaki, Hiroyasu Fukaya, Yukio Sakakibara | 1980-01-01 |