Patent US2994671A successfully refreshed from Google Patents.
US2994671A
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Coating linear condensation polymers with a polyisocyanate adduct
Assignee: EIDP Inc
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Filing: 1956-10-17
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Granted: 1961-08-01
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Expires: 1976-10-17
Abstract
No abstract record available.
Inventors
- 👤 Walter L Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:09
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08J2321/00; Y; Y10; Y10S; Y10S156/00; Y10S156/91; Y10S528/00; Y10S528/905; Y10S8/00; Y10S8/21
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
78 words
AN ADHESIVE COMPOSITION COMPRISING AN AQUEOUS DISPERSION CONTAINING (A) AT LEAST ABOUT 0.3% TO ABOUT 3% BY WEIGHT OF A WATER-SOLUBLE ORGANIC POLYMER SELECTED FROM THE GROUP CONSISTING OF A WATER-SOLUBLE SALT OF ALGINIC ACID, POLYACRYLAMIDE, SODIUM POLYACRYLATE, AND METHYL CELLULOSE, (B) FROM ABOUT 1% TO ABOUT 15% BY WEIGHT OF A VULCANIZABLE ORGANIC POLYMER SELECTED FROM THE GROUP CONSISTING OF A BUTADIENE/STYRENE COPOLYMER, A BUTADIENE/VINYLPYRIDINE COPOLYMER, AND A BUTADIENE/STYRENE/VINYLPYRIDINE COPOLYMER, AND (C) A COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
USRE23451E
Cited
US2439514A
Cited
US2447538A
Cited
US2462591A
Cited
US2570895A
Cited
US2717217A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |