US3002840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-tack composition
Assignee: Rhein Chemie Rheinau GmbH
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Filing: 1959-02-26
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Granted: 1961-10-03
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Expires: 1979-02-26
Abstract
No abstract record available.
Inventors
- 👤 Kern Rudolf
- 👤 Scheurer Hans
- 👤 Ultsch George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:37
CPC Classifications
B; B29; B29C; B29C37/00; B29C37/0067; B29C37/0075; B29K; B29K2021/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31826; Y10T428/31841; Y10T428/31971
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A WATER-SOLUBLE ANTI-TACK COMPOSITION FOR PREVENTING ADHESION OF CONTACTING SURFACES AT LEAST ONE OF WHICH IS OF ADHERENT QUALITY, SAID COMPOSITION CONSISTING ESSENTIALLY OF A MIXTURE OF AT LEAST ONE WATER-SOLUBLE SALT OF A FATTY ACID HAVING BETWEEN 8 AND 30 CARBON ATONS, AND A MIXTURE OF AT LEAST TWO WATER-SOLUBLE SALTS OF CARBOXYMETHYL CELLULOSE, SAID LATTER MIXTURE CONSISTING OF SUBSTANTIALLY EQUAL PROPORTIONS OF AT LEAST ONE CARBOXYMETHYL CELLULOSE SALT HAVING A VISCOSITY OF BETWEEN ABOUT 15-50 CENTIPOISE AND AT LEAST ONE CARBOXYMETHYL CELLULOSE SALT HAVING A VISCOSITY OF BETWEEN ABOUT 150-500 CENTIPOISE, SAID SALTS BEING MIXED IN SUCH PROPORTIONS THAT THE RATIO OF SAID FATTY ACID SALT EXPRESSED IN PARTS BY WEIGHT OF FATTY ACID EQUIVALENTS THEREIN TO SAID COMBINED SALTS OF CARBOXYMETHYL CELLULOSE IS SUBSTANTIALLY BETWEEN 15:1 AND 5:3.
Claim 2
Dependent Claim
131 words
A WATER-SOLUBLE ANTI-TACK COMPOSITION FOR PREVENTING ADHESION OF CONTACTING SURFACES AT LEAST ONE OF WHICH IS OF ADHERENT QUALITY, SAID COMPOSITION CONSISTING ESSENTIALLY OF A MIXTURE OF AT LEAST ONE WATER-SOLUBLE SALT OF A FATTY ACID HAVING BETWEEN 8 AND 30 CARBON ATONS, AND A MIXTURE OF AT LEAST TWO WATER-SOLUBLE SALTS OF CARBOXYMETHYL CELLULOSE, SAID LATTER MIXTURE CONSISTING OF SUBSTANTIALLY EQUAL PROPORTIONS OF AT LEAST ONE CARBOXYMETHYL CELLULOSE SALT HAVING A VISCOSITY OF BETWEEN ABOUT 15-50 CENTIPOISE AND AT LEAST ONE CARBOXYMETHYL CELLULOSE SALT HAVING A VISCOSITY OF BETWEEN ABOUT 150-500 CENTIPOISE, SAID SALTS BEING MIXED IN SUCH PROPORTIONS THAT THE RATIO OF SAID FATTY ACID SALT EXPRESSED IN PARTS BY WEIGHT OF FATTY ACID EQUIVALENTS THEREIN TO SAID COMBINED SALTS OF CARBOXYMETHYL CELLULOSE IS SUBSTANTIALLY BETWEEN 15:1 AND 5:3.
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) | 1964-10-02 | 1965-04-03 | 1965-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-02 | 1969-04-03 | 1969-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-02 | 1973-04-03 | 1973-10-03 | $7700.00 | Window Closed / Lapsed |