Patent US2779682A successfully refreshed from Google Patents.
US2779682A
Expired / Lapsed
US
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Plaster composition for use in collapsible tubes
Assignee: Individual
•
Filing: 1954-04-12
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Granted: 1957-01-29
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Expires: 1974-04-12
Abstract
No abstract record available.
Inventors
- 👤 Langer Steven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:09
CPC Classifications
C; C04; C04B; C04B24/00; C04B24/24; C04B24/38; C04B24/383; C04B26/00; C04B26/02; C04B26/28; C04B26/285; C09; C09D; C09D5/00; C09D5/34; C04B2111/00; C04B2111/00474; C04B2111/00663
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A COMPOSITION COMPRISING BY WEIGHT ABOUT 100 PARTS OF CALCIUM SULFATE DIHYDRATE, BETWEEN 3.0 AND 5.0 PARTS OF A CELLULOSIC ACID TAKEN FROM THE GROUP CONSISTING OF CARBOXYMETHYLCELLULOSE AND CELLURONIC ACID AND SUFFICIENT WATER TO FORM AN EXTRUDABLE PLASTIC MASS.
Claim 2
Dependent Claim
40 words
A COMPOSITION COMPRISING BY WEIGHT ABOUT 100 PARTS OF CALCIUM SULFATE DIHYDRATE, BETWEEN 3.0 AND 5.0 PARTS OF A CELLULOSIC ACID TAKEN FROM THE GROUP CONSISTING OF CARBOXYMETHYLCELLULOSE AND CELLURONIC ACID AND SUFFICIENT WATER TO FORM AN EXTRUDABLE PLASTIC MASS.
References Cited (Backward Citations)
US1868851A
Cited
US2371688A
Cited
US2398047A
Cited
CH259646A
Cited
US2640791A
Cited
US2649999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |