Patent US3492154A successfully refreshed from Google Patents.
US3492154A
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US
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Process for producing microporous polymeric materials
Assignee: EIDP Inc
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Filing: 1966-09-30
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Granted: 1970-01-27
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Expires: 1986-09-30
Abstract
No abstract record available.
Inventors
- 👤 Robert V Einstman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:02
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/12; D06N3/14; C; C08; C08J; C08J9/00; C08J9/28; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/587; D04H1/64; C08J2201/00; C08J2201/04; C08J2201/054; C08J2201/0542; C08J2201/0544
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) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |