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For the Inventor, By the Inventor

Sennan, Japan

Masayoshi Sahara

USPTO Granted Patents = 52

Average Co-Inventor Count = 2.9

ph-index = 12

Forward Citations = 560(Granted Patents)

Forward Citations (Not Self Cited) = 523(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Toyokawa, JA (1976)
  • Sakai, JA (1976 - 1977)
  • Sennan, JA (1978)
  • Sannan, JP (1979)
  • Osaka, JP (1985)
  • Sennan, JP (1979 - 1997)

Company Filing History:

goldMedal49 out of 2,979 
 
Minolta Camera Kabushiki Kaisha
 patents
silverMedal2 out of 10 
 
Minolta Camera K.k.
 patents
bronzeMedal1 out of 5 
 
Minolta Camera Corporation
 patents

Years Active: 1976-1997

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Areas of Expertise:
Camera System
Exposure Control
Interchangeable Objective Lens
Camera Accessory
Automatic Diaphragm Control
Analog-to-Digital Converter
Electronic Flash Control
Power Source Switch
Camera Actuation Control
Photographic Camera Circuitry
Light Responsive Control
Camera Exposure Time Control
52 patents (USPTO):Explore Patents
1. 5659820 - Camera system (1997-08-19),
2. 5311245 - Camera system operable by carrying data from a camera accessory to a (1994-05-10),
3. 5111234 - Camera system with means for varying exposure control data (1992-05-05),
4. 5075710 - Camera with manually operable means for designating and altering the (1991-12-24),
5. 5041861 - Camera system with means for detecting the condition of back-up power (1991-08-20),
6. 5036350 - Camera system (1991-07-30),
7. 4974000 - Camera system operable by carrying data from a camera accessory (1990-11-27),
8. 4970541 - Camera system operable by carrying data from a camera accessory to a (1990-11-13),
9. 4956661 - Camera system (1990-09-11),
10. 4952959 - Camera system (1990-08-28),
11. 4947203 - Camera system for alternately indicating exposure time data, aperture (1990-08-07),
12. 4912498 - Camera system capable of interchanging its objective lens (1990-03-27),
13. 4866467 - Camera system (1989-09-12),
14. 4860046 - Camera system (1989-08-22),
15. 4857953 - Camera system (1989-08-15),

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