US3518325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polysiloxane release coatings
Assignee: Dow Silicones Corp
•
Filing: 1969-04-01
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Granted: 1970-06-30
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Expires: 1989-04-01
Abstract
No abstract record available.
Inventors
- 👤 James K Campbell
- 👤 Lawrence C Sprenger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:45
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/643; C; C08; C08L; C08L83/00; C08L83/04; C08G; C08G77/00; C08G77/04; C08G77/12; C08G77/14; C08G77/16; Y; Y10; Y10S; Y10S528/00; Y10S528/901; Y10T; Y10T428/00; Y10T428/28; Y10T428/2839; Y10T428/31504; Y10T428/31551; Y10T428/31609; Y10T428/31612; Y10T428/31652; Y10T428/31663
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) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |