US3361586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of treating polyimide surface with polyalkylenimines and polyalkylene polyamines
Assignee: EIDP Inc
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Filing: 1964-10-01
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Granted: 1968-01-02
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Expires: 1984-10-01
Abstract
No abstract record available.
Inventors
- 👤 William B Lindsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:05
CPC Classifications
C; C09; C09J; C09J179/00; C09J179/04; C09J179/08; B; B29; B29C; B29C65/00; B29C65/48; B29C65/4805; B29C65/483; B29C65/4835; B29C66/00; B29C66/70; B29C66/71; B29C66/712; B32; B32B; B32B27/00; C08; C08G; C08G73/00; C08G73/02; C08G73/0206; C08G73/0213; C08G73/0226; C09J5/00; C09J5/02; B29C65/02; B29C65/18; B29C66/72; B29C66/723; C08L; C08L79/00; C08L79/04; C08L79/08; C09J2479/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
THE PROCESS OF IMPROVING THE ADHERABILITY OF A POLYIMIDE SURFACE, SAID POLYIMIDE BEING CHARACTERIZED BY A RECURRING UNIT HAVING THE FOLLOWING STRUCTURAL FORMULA:
Claim 2
Dependent Claim
23 words
THE PROCESS OF IMPROVING THE ADHERABILITY OF A POLYIMIDE SURFACE, SAID POLYIMIDE BEING CHARACTERIZED BY A RECURRING UNIT HAVING THE FOLLOWING STRUCTURAL FORMULA:
References Cited (Backward Citations)
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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) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |