US3386795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyesters having improved dyeing properties
Assignee: Eastman Kodak Co
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Filing: 1964-10-05
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Granted: 1968-06-04
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Expires: 1984-10-05
Abstract
No abstract record available.
Inventors
- 👤 John R Caldwell
- 👤 Gilkey Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:56
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3415; C08K5/3417; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/922
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
51 words
THE PROCESS FOR IMPROVING THE DYEABILITY OF POLYESTER FIBERS, COMPRISING COATING THE FIBERS WITH AT LEAST SUBSTANTIALLY COLORLESS COMPOUND HAVING A MOLECUALR WEIGHT OF FROM ABOUT 180 TO ABOUT 1000 AND CONTAINING AT LEAST ONE CARBOXIMIDE GROUP, THE VALENCES OF WHICH ARE SATISFIED BY VARIOUS RADICALS AS SHOWN BY THE FORMULA
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) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |