Patent US3099641A successfully refreshed from Google Patents.
US3099641A
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Polyamide-polyamine synthetic resins from diketene and a diamine
Assignee: Eastman Kodak Co
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Filing: 1958-05-15
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Granted: 1963-07-30
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Expires: 1978-05-15
Abstract
No abstract record available.
Inventors
- 👤 John R Caldwell
- 👤 James C Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:32
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/48; C08G69/50; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
A FILM-FORMING HIGHLY POLYMERIC LENEAR POLYAMIDEPOLYAMINE CO,POSED SOLETLY OF REGYLARLY RECURRING UNITS SELECTED FROM THE GROUP CONSISTING OF UNITS HAVING THE FOLLOWING TWO FORMULAS:
Claim 2
Dependent Claim
24 words
A FILM-FORMING HIGHLY POLYMERIC LENEAR POLYAMIDEPOLYAMINE CO,POSED SOLETLY OF REGYLARLY RECURRING UNITS SELECTED FROM THE GROUP CONSISTING OF UNITS HAVING THE FOLLOWING TWO FORMULAS:
References Cited (Backward Citations)
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-29 | 1967-01-28 | 1967-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-29 | 1971-01-28 | 1971-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-29 | 1975-01-28 | 1975-07-30 | $7700.00 | Window Closed / Lapsed |