Patent US1982294A successfully refreshed from Google Patents.
Patent US3270638A successfully refreshed from Google Patents.
US3270638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photometric system
Assignee: Eastman Kodak Co
•
Filing: 1963-07-22
•
Granted: 1966-09-06
•
Expires: 1983-07-22
Abstract
No abstract record available.
Inventors
- 👤 Robert D Anwyl
- 👤 Dean M Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:23
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/42; G01J1/4209; G01J1/4214; G01J1/48; G03; G03B; G03B7/00; G03B7/08; G03B7/18; G01J1/02; G01J1/04; G01J1/0403; G01J1/0407; G01J1/0418
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
IN A CAMERA OF THE TYPE HAVING MEANS INCLUDING A PHOTOCELL FOR SENSING SCENE BRIGHTNESS AND MEANS FOR CONTROLLING THE EXPOSURE IN ACCORDANCE WITH THE OUTPUT OF SAID PHOTOCELL, A PHOTOTROPIC ELEMENT BEING MOVABLY MOUNTED TO A POSITION COVERING AT LEAST A PART OF SAID PHOTOCELL, SAID PHOTOTROPIC ELEMENT BEING SENSITIVE MAINLY TO ENERGY OF A PARTICULAR WAVELENGTH, SO THAT IN OPERATION THE CAMERA WILL GIVE GREATER EXPOSURE TO SCENES WHICH ARE HIGHLY ILLUMINATED BY SAID PARTICULAR WAVE LENGTH, THAN IT WILL TO SCENES WHICH ARE ILLUMINATED BY RADIATION OF OTHER WAVE LENGTHS.
Claim 2
Dependent Claim
93 words
IN A CAMERA OF THE TYPE HAVING MEANS INCLUDING A PHOTOCELL FOR SENSING SCENE BRIGHTNESS AND MEANS FOR CONTROLLING THE EXPOSURE IN ACCORDANCE WITH THE OUTPUT OF SAID PHOTOCELL, A PHOTOTROPIC ELEMENT BEING MOVABLY MOUNTED TO A POSITION COVERING AT LEAST A PART OF SAID PHOTOCELL, SAID PHOTOTROPIC ELEMENT BEING SENSITIVE MAINLY TO ENERGY OF A PARTICULAR WAVELENGTH, SO THAT IN OPERATION THE CAMERA WILL GIVE GREATER EXPOSURE TO SCENES WHICH ARE HIGHLY ILLUMINATED BY SAID PARTICULAR WAVE LENGTH, THAN IT WILL TO SCENES WHICH ARE ILLUMINATED BY RADIATION OF OTHER WAVE LENGTHS.
References Cited (Backward Citations)
US2824235A
Cited
US2952195A
Cited
US2999443A
Cited
US3174537A
Cited
US3094053A
Cited
US3205803A
Cited
US3176599A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |