Patent US3535145A successfully refreshed from Google Patents.
US3535145A
Expired / Lapsed
US
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Surface treatment of organic polymers
Assignee: Dow Silicones Corp
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Filing: 1968-10-23
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Granted: 1970-10-20
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Expires: 1988-10-23
Abstract
No abstract record available.
Inventors
- 👤 William G Gowdy
- 👤 Joseph W Keil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:50
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; C08L83/06; C08J; C08J7/00; C08J7/12; C08K; C08K5/00; C08K5/54; C08K5/548; C08L83/08; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T428/31667; Y10T428/31678; Y10T428/31692; Y10T428/31696; Y10T428/31826
Claims Analysis
Total Claims: 0
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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) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |