Patent US3036950A successfully refreshed from Google Patents.
US3036950A
Expired / Lapsed
US
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Process for incorporating resins into paper
Assignee: Burgess Cellulose Co
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Filing: 1959-06-22
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Granted: 1962-05-29
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Expires: 1979-06-22
Abstract
No abstract record available.
Inventors
- 👤 Ray C Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:25
CPC Classifications
D; D21; D21H; D21H23/00; D21H23/76; D21H23/765; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H23/02; D21H23/04; D21H23/06; D21H23/14; D21H23/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A PROCESS FOR DEPOSITING A WATER-DISPERSIBLE RESIN ON BEATEN CELLULOSE PULP FIBERS COMPRISING FIRST DISPERSING POLYVINYLPYRROLIDONE INTO AN AQUEOUS SLURRY OF SAID FIBERS, AND SUBSEQUENTLY DISPERSING SAID RESIN INTO SAID SLURRY, YHR POLYBINYLPYTTOLIFONR BEING ADDED IN AN AMOUNT OF AT LEAST ABOUT 0.05% BY WEIGHT BASED ON THE DRY WEIGHT OF SAID PULP FIBERS.
Claim 2
Dependent Claim
54 words
A PROCESS FOR DEPOSITING A WATER-DISPERSIBLE RESIN ON BEATEN CELLULOSE PULP FIBERS COMPRISING FIRST DISPERSING POLYVINYLPYRROLIDONE INTO AN AQUEOUS SLURRY OF SAID FIBERS, AND SUBSEQUENTLY DISPERSING SAID RESIN INTO SAID SLURRY, YHR POLYBINYLPYTTOLIFONR BEING ADDED IN AN AMOUNT OF AT LEAST ABOUT 0.05% BY WEIGHT BASED ON THE DRY WEIGHT OF SAID PULP FIBERS.
References Cited (Backward Citations)
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Cited
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US2930106A
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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) | 1965-05-28 | 1965-11-27 | 1966-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-28 | 1969-11-27 | 1970-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-28 | 1973-11-27 | 1974-05-29 | $7700.00 | Window Closed / Lapsed |