US2883327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reducing the gelation of methylcellulose by the addition of a neutral, water-soluble, amino carboxylic acid and product thereof
Assignee: Pharmacia and Upjohn Co
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Filing: 1954-05-03
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Granted: 1959-04-21
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Expires: 1974-05-03
Abstract
No abstract record available.
Inventors
- 👤 Jack K Dale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:04
CPC Classifications
C; C08; C08B; C08B11/00; C08B11/20; A; A61; A61K; A61K47/00; A61K47/06; A61K47/16; A61K47/18; A61K47/183; A61K47/30; A61K47/36; A61K47/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
THE METHOD OF INHIBITING THE GELATION OF METHYLCELLULOSE BY WATER WHICH COMPRISES MIXING NONHYDRATED METHYLCELLULOSE AND A NEUTRAL, WATER-SOLUBLE AMINO CARBOXYLIC ACID.
Claim 2
Independent Claim
22 words
THE METHOD OF INHIBITING THE GELATION OF METHYLCELLULOSE BY WATER WHICH COMPRISES MIXING NONHYDRATED METHYLCELLULOSE AND A NEUTRAL, WATER-SOLUBLE AMINO CARBOXYLIC ACID.
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) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |