Patent US3199402A successfully refreshed from Google Patents.
US3199402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printing apparatus for color photography
Assignee: Eastman Kodak Co
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Filing: 1960-11-01
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Granted: 1965-08-10
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Expires: 1980-11-01
Abstract
No abstract record available.
Inventors
- 👤 Robert W G Hunt
- 👤 Watt Peter Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:12
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/72; G03B27/73; G03B27/735
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
AN APPARATUS FOR MAKING COLOR PRINTS, COMPRISING A LIGHT SOURCE, WHOSE SPECTRAL COMPOSITION MAY BE VARIED, TWO PHOTOELECTRIC MEANS RESPONSIVE TO TWO DIFFERENT REGIONS OF THE SPECRUM EACH COMPRISING ONE OR MORE BARRIER LAYER PHOTOCELLS COVERED WITH OPTICAL FILTERS, THE ELECTRICAL OUTPUTS OF SAID PHOTOELECTRIC MEANS BEING RELATED TO THE LIGHT INTENSITY IN SAID TWO REGIONS OF THE SPECTRUM AND BEING CONNECTED, SO THAT SAID OUTPUTS OPPOSE EACH OTHER, TO AN ELECTRICAL INDICATING DEVICE WHOSE NULL OUTPUT, WHEN PRODUCED BY VARIATION OF THE SPECTRAL COMPOSITION OF THE LIGHT SOURCE, CORRESPONDS TO A PREDETERMINED COLOR BALANCE.
Claim 2
Independent Claim
95 words
AN APPARATUS FOR MAKING COLOR PRINTS, COMPRISING A LIGHT SOURCE, WHOSE SPECTRAL COMPOSITION MAY BE VARIED, TWO PHOTOELECTRIC MEANS RESPONSIVE TO TWO DIFFERENT REGIONS OF THE SPECRUM EACH COMPRISING ONE OR MORE BARRIER LAYER PHOTOCELLS COVERED WITH OPTICAL FILTERS, THE ELECTRICAL OUTPUTS OF SAID PHOTOELECTRIC MEANS BEING RELATED TO THE LIGHT INTENSITY IN SAID TWO REGIONS OF THE SPECTRUM AND BEING CONNECTED, SO THAT SAID OUTPUTS OPPOSE EACH OTHER, TO AN ELECTRICAL INDICATING DEVICE WHOSE NULL OUTPUT, WHEN PRODUCED BY VARIATION OF THE SPECTRAL COMPOSITION OF THE LIGHT SOURCE, CORRESPONDS TO A PREDETERMINED COLOR BALANCE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |