Patent US3075432A successfully refreshed from Google Patents.
US3075432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective color filter
Assignee: SEARBOROUGH ASSOCIATES Inc
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Filing: 1954-05-03
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Granted: 1963-01-29
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Expires: 1974-05-03
Abstract
No abstract record available.
Inventors
- 👤 Elman B Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:52
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02B5/201
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A MICROCHROME ANALYZER, COMPRISING A PHOTO-SENSITIVE GLASS PLATE HAVING RECORDED THEREON A LIGHT-PERMEABLE SYMMETRICAL ARRAY OF LIKE, PARALLEL STRIPES OF MICROSCOPIC WIDTH AND IN JUXTAPOSED RELATION, EACH STRIPE BEING CONSTITUTED BY A RATIONAL COLOR SPECTRUM OF HUES IN THE ORDER OF THEIR WAVELENGTH TO DEFINE A SELECTIVE COLOR FILTER, SAID STRIPES IN SAID ARRAY HAVING A DENSITY OF AT LEAST 100 STRIPES PER INCH OF SAID PLATE WHEREBY SAID PLATE HAS A GENERALLY WHITE APPEARANCE BY REASON OF OPTICAL FUSION.
Claim 2
Dependent Claim
80 words
A MICROCHROME ANALYZER, COMPRISING A PHOTO-SENSITIVE GLASS PLATE HAVING RECORDED THEREON A LIGHT-PERMEABLE SYMMETRICAL ARRAY OF LIKE, PARALLEL STRIPES OF MICROSCOPIC WIDTH AND IN JUXTAPOSED RELATION, EACH STRIPE BEING CONSTITUTED BY A RATIONAL COLOR SPECTRUM OF HUES IN THE ORDER OF THEIR WAVELENGTH TO DEFINE A SELECTIVE COLOR FILTER, SAID STRIPES IN SAID ARRAY HAVING A DENSITY OF AT LEAST 100 STRIPES PER INCH OF SAID PLATE WHEREBY SAID PLATE HAS A GENERALLY WHITE APPEARANCE BY REASON OF OPTICAL FUSION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |