Patent US3287313A successfully refreshed from Google Patents.
US3287313A
Expired / Lapsed
US
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Shaped articles containing polyvinyl alcohol, bentonite and stearamide
Assignee: Kurashiki Rayon Co Ltd
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Filing: 1962-12-05
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Granted: 1966-11-22
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Expires: 1982-12-05
Abstract
No abstract record available.
Inventors
- 👤 Imoto Saburo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:23
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34; C08K3/346; C08K5/00; C08K5/16; C08K5/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
AN ARTICLE OF MANUFACTURE COMPRISING A SHAPED COMPOSITION HAVING HIGH TENSILE STRENGTH, LOW ELONGATION AND HIGH WATER RESISTANCE CONSISTING ESSENTIALLY OF FROM 25 PERCENT TO 80 PERCENT BY WEIGHT OF POLYVINYL ALCOHOL, FROM 20 PERCENT TO 75 PERCENT BY WEIGHT OF BENTONITE, AND UP TO 10 PERCENT BY WEIGHT OF STEARAMIDE, ALL OF THE WEIGHT PERCENTAGE BEING BASED ON THE COMBINED WEIGHT OF POLYVINYL ALCOHOL AND BENTONITE.
Claim 2
Dependent Claim
67 words
AN ARTICLE OF MANUFACTURE COMPRISING A SHAPED COMPOSITION HAVING HIGH TENSILE STRENGTH, LOW ELONGATION AND HIGH WATER RESISTANCE CONSISTING ESSENTIALLY OF FROM 25 PERCENT TO 80 PERCENT BY WEIGHT OF POLYVINYL ALCOHOL, FROM 20 PERCENT TO 75 PERCENT BY WEIGHT OF BENTONITE, AND UP TO 10 PERCENT BY WEIGHT OF STEARAMIDE, ALL OF THE WEIGHT PERCENTAGE BEING BASED ON THE COMBINED WEIGHT OF POLYVINYL ALCOHOL AND BENTONITE.
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) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |