Patent US2579481A successfully refreshed from Google Patents.
US2579481A
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Adhesive composition
Assignee: Individual
•
Filing: 1948-02-17
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Granted: 1951-12-25
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Expires: 1968-02-17
Abstract
No abstract record available.
Inventors
- 👤 James E Fenn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:06
CPC Classifications
C; C09; C09J; C09J197/00; C09J129/00; C09J129/02; C09J129/04; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/28; C08L97/00; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2852; Y10T428/2878; Y10T428/31504; Y10T428/31855
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A REMOISTENING ADHESIVE COMPRISING AS A MAJOR INGREDIENT THE CONCENTRATED WASTE PRODUCT OF THE SULFITE-PULP PROCESS TREATED WITH APPROXIMATELY 1% TO 2.25% OF PHOSPHORIC ACID, AND THEN BLENDED WITH POLYVINYL ALCOHOL AND A PLASTICIZER SELECTED FROM THE GROUP WHICH CONSISTS OF UREA AND THIOUREA, SAID PLASTICIZER BEING IN THE AMOUNT OF SUBSTANTIALLY 10% TO 20% BASED ON THE DRY WEIGHT OF THE POLYVINYL ALCOHOL AND ACIDTREATED MATERIAL, SAID PLASTICIZER BEING IN AN AMOUNT GREATER THAN SAID POLYVINYL ALCOHOL.
Claim 2
Dependent Claim
78 words
A REMOISTENING ADHESIVE COMPRISING AS A MAJOR INGREDIENT THE CONCENTRATED WASTE PRODUCT OF THE SULFITE-PULP PROCESS TREATED WITH APPROXIMATELY 1% TO 2.25% OF PHOSPHORIC ACID, AND THEN BLENDED WITH POLYVINYL ALCOHOL AND A PLASTICIZER SELECTED FROM THE GROUP WHICH CONSISTS OF UREA AND THIOUREA, SAID PLASTICIZER BEING IN THE AMOUNT OF SUBSTANTIALLY 10% TO 20% BASED ON THE DRY WEIGHT OF THE POLYVINYL ALCOHOL AND ACIDTREATED MATERIAL, SAID PLASTICIZER BEING IN AN AMOUNT GREATER THAN SAID POLYVINYL ALCOHOL.
References Cited (Backward Citations)
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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 |