Patent US3299773A successfully refreshed from Google Patents.
US3299773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lens for color photography
Assignee: Individual
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Filing: 1964-03-11
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Granted: 1967-01-24
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Expires: 1984-03-11
Abstract
No abstract record available.
Inventors
- 👤 Jasny Jan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:03
CPC Classifications
G; G02; G02B; G02B13/00; G03; G03B; G03B27/00; G03B27/72; G03B27/73
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
A LENS SYSTEM FOR USE IN COLOR PHOTOGRAPHY COMPRISING AT LEAST TWO SPACED LENS ELEMENTS, A DIAPHRAGM PLATE HAVING AN OPENING AND A FILTERING SYSTEM ADJACENT SAID DIAPHRAGM PLATE, SAID DIAPHRAGM AND FILTERING SYSTEM BEING DISPOSED BETWEEN SAID SPACED LENS ELEMENTS, SAID FILTERING SYSTEM BEING CONSTITUTED BY TWO PLATES SLIDABLY MOUNTED ON OPPOSITE SIDES OF THE DIAPHRAGM PLATE IN IMMEDIATE PROXIMATE RELATION THEREWITH, EACH OF SAID PLATES INCLUDING A COLORLESS CENTRAL PART AND TWO COLORED PARTS LOCATED ON BOTH SIDES OF SAID CENTRAL PARTS, SAID COLORS BEING THE THREE BASIC COLORS CHARACTERISTIC FOR THE SUBTRACTIVE METHOD OF MIXING COLORS, ONE OF SAID BASIC COLORS BEING IN BOTH SAID FILTERING PLATES, A RACK MECHANISM FOR DISPLACEMENT OF EACH OF THE FILTERING PLATES, A GEAR ENGAGING EACH RACK MECHANISM TO DRIVE THE SAME AND ENGAGING MEANS COUPLED TO EACH OF SAID GEARS TO OPERATE THE SAME, EACH SAID ENGAGING MEANS BEING PROVIDED WITH A SCALE CORRESPONDING TO THE DENSITY OF COLOR OF THE LIGHT
Claim 2
Dependent Claim
162 words
A LENS SYSTEM FOR USE IN COLOR PHOTOGRAPHY COMPRISING AT LEAST TWO SPACED LENS ELEMENTS, A DIAPHRAGM PLATE HAVING AN OPENING AND A FILTERING SYSTEM ADJACENT SAID DIAPHRAGM PLATE, SAID DIAPHRAGM AND FILTERING SYSTEM BEING DISPOSED BETWEEN SAID SPACED LENS ELEMENTS, SAID FILTERING SYSTEM BEING CONSTITUTED BY TWO PLATES SLIDABLY MOUNTED ON OPPOSITE SIDES OF THE DIAPHRAGM PLATE IN IMMEDIATE PROXIMATE RELATION THEREWITH, EACH OF SAID PLATES INCLUDING A COLORLESS CENTRAL PART AND TWO COLORED PARTS LOCATED ON BOTH SIDES OF SAID CENTRAL PARTS, SAID COLORS BEING THE THREE BASIC COLORS CHARACTERISTIC FOR THE SUBTRACTIVE METHOD OF MIXING COLORS, ONE OF SAID BASIC COLORS BEING IN BOTH SAID FILTERING PLATES, A RACK MECHANISM FOR DISPLACEMENT OF EACH OF THE FILTERING PLATES, A GEAR ENGAGING EACH RACK MECHANISM TO DRIVE THE SAME AND ENGAGING MEANS COUPLED TO EACH OF SAID GEARS TO OPERATE THE SAME, EACH SAID ENGAGING MEANS BEING PROVIDED WITH A SCALE CORRESPONDING TO THE DENSITY OF COLOR OF THE LIGHT
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) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |