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US2579483A
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Adhesive composition
Assignee: Individual
•
Filing: 1949-07-29
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Granted: 1951-12-25
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Expires: 1969-07-29
Abstract
No abstract record available.
Inventors
- 👤 James E Fenn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:09
CPC Classifications
C; C09; C09J; C09J197/00; C09J129/00; C09J129/02; C09J129/04; C08; C08L; C08L2666/00; C08L2666/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
AN ADHESIVE COMPRISING AS A MAJOR INGREDIENT THE CONCENTRATED WASTE LIQUOR OF THE SULFITE PULP PROCESS, POLYVINYL ALCOHOL, A PLASTICIZER SELECTED FROM THE GROUP CONSISTING OF UREA AND THIOURES, AND FORMAMIDE, SAID PLASTICIZER, AND FORMAMIDE TOGETHER BEING IN AN AMOUNT NOT LESS THAN THE AMOUNT OF POLYVINYL ALCOHOL.
Claim 2
Dependent Claim
48 words
AN ADHESIVE COMPRISING AS A MAJOR INGREDIENT THE CONCENTRATED WASTE LIQUOR OF THE SULFITE PULP PROCESS, POLYVINYL ALCOHOL, A PLASTICIZER SELECTED FROM THE GROUP CONSISTING OF UREA AND THIOURES, AND FORMAMIDE, SAID PLASTICIZER, AND FORMAMIDE TOGETHER BEING IN AN AMOUNT NOT LESS THAN THE AMOUNT OF POLYVINYL ALCOHOL.
References Cited (Backward Citations)
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Cited
US2162618A
Cited
US2340866A
Cited
US2385586A
Cited
US2443889A
Cited
US2457357A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |