Patent US2595935A successfully refreshed from Google Patents.
US2595935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wet strength paper and process for the production thereof
Assignee: Wyeth Holdings LLC
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Filing: 1946-08-03
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Granted: 1952-05-06
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Expires: 1966-08-03
Abstract
No abstract record available.
Inventors
- 👤 Jr John H Daniel
- 👤 Chester G Landes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:25
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/54; C; C08; C08G; C08G73/00; C08G73/02; C08G73/0206; C08G73/0213; C08G73/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
PAPER HAVING A UNIFROM CONTENT OF ABOUT 0.5-5% OF ITS DRY WEIGHT OF A CURED THERMOSETTING ALKYLENEPOLYAMINE-POLYFUNCTIONAL HALOHYDRIN RESIN.
Claim 2
Dependent Claim
19 words
PAPER HAVING A UNIFROM CONTENT OF ABOUT 0.5-5% OF ITS DRY WEIGHT OF A CURED THERMOSETTING ALKYLENEPOLYAMINE-POLYFUNCTIONAL HALOHYDRIN RESIN.
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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) | 1955-05-06 | 1955-11-05 | 1956-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-06 | 1959-11-05 | 1960-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-06 | 1963-11-05 | 1964-05-06 | $7700.00 | Window Closed / Lapsed |