US2544585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive of water remoistenable type from lignin sulfonic acid and polyvinyl alcoholand process involved in its preparation and use
Assignee: Gummed Products Co
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Filing: 1948-10-12
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Granted: 1951-03-06
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Expires: 1968-10-12
Abstract
No abstract record available.
Inventors
- 👤 Donald S Bruce
- 👤 Howard L Heise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:02
CPC Classifications
C; C09; C09J; C09J197/00; C09J129/00; C09J129/02; C09J129/04; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/54; C08L97/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
79 words
AN ADHESIVE COMPOSITION OF THE WATER REMOISTENABLE TYPE COMPRISING LIGNIN SULFONIC ACID AND POLYVINYL ALCOHOL AND CONTAINING, AS A HYGROSCOPICITY INHIBITOR, A SALT OF A STRONG ACID AND WEAK BASE, SUCH SALT BEING OF THE CLASS CONSISTING IN ISOMORPHIC ALUMS OF THE CLASS CONSISTING IN POTASH ALUM, SODA ALUM, CHROME ALUM AND SELENIUM ALUM, THE HYGROSCOPICAL INHIBITIVE EFFECT OF SUCH INHIBITOR BEING FIXED BY THE ADDITION OF AN INSOLUBILIZING FIXING INGREDIENT OF THE CLASS CONSISTING IN UREA AND DICYANDIAMIDE.
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) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |