US3436353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phototropic compositions
Assignee: Polacoat Inc
•
Filing: 1959-10-22
•
Granted: 1969-04-01
•
Expires: 1979-10-22
Abstract
No abstract record available.
Inventors
- 👤 John F Dreyer
- 👤 Donald H Baltzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:14
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; G02; G02B; G02B5/00; G02B5/20; G02B5/22; G02B5/23; Y; Y10; Y10S; Y10S430/00; Y10S430/163
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1657776A
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US1678218A
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US1845835A
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US2305799A
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US2533426A
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US2710274A
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US2895892A
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US2813802A
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US2921407A
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US2953454A
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US2992938A
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US3020406A
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US3085469A
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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) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |