Patent US2512463A successfully refreshed from Google Patents.
US2512463A
Expired / Lapsed
US
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Cellular plastic products and method of making
Assignee: EIDP Inc
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Filing: 1946-05-28
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Granted: 1950-06-20
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Expires: 1966-05-28
Abstract
No abstract record available.
Inventors
- 👤 Robert E Maier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:26
CPC Classifications
C; C08; C08J; C08J9/00; C08J2301/00; Y; Y10; Y10S; Y10S264/00; Y10S264/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A COMPOSITE ADAPTED TO BE CONVERTED INTO A CELLULAR PRODUCT, SAID COMPOSITE BEING A DISCONTINUOUS BUT UNIFORM MIXTURE COMPRISING, BY WEIGHT, APPROXIMATELY 100 PARTS OF AN ORGANIC CELLULOSE DERIVATIVE FROM THE GROUP CONSISTING OF CELLULOSE ETHERS AND CELLULOSE ESTERS OF ALIPHATIC MONOCARBOXYLIC ACIDS, 0.5-2.5 PARTS OF A GRANULAR, WATERINSOLUBLE, HEAT-STABLE POWDER SUBSTANTIALLY PASSING A 100-MESH SCREEN AND BEING RETAINED ON A 325-MESH SCREEN, SAID POWDER BEING BOTH INCOMPATIBLE WITH AND CHEMICALLY INERT WITH RESPECT TO CELLULOSE DERIVATIVE PLASTICS, AND 10-25 PARTS OF A VOLATILE LIQUID WHICH IS A NON-SOLVENT FOR SAID CELLULOSE DERIVATIVE AT 70*F. AND A SOLVENT THEREFOR AT 160*F.
Claim 2
Dependent Claim
101 words
A COMPOSITE ADAPTED TO BE CONVERTED INTO A CELLULAR PRODUCT, SAID COMPOSITE BEING A DISCONTINUOUS BUT UNIFORM MIXTURE COMPRISING, BY WEIGHT, APPROXIMATELY 100 PARTS OF AN ORGANIC CELLULOSE DERIVATIVE FROM THE GROUP CONSISTING OF CELLULOSE ETHERS AND CELLULOSE ESTERS OF ALIPHATIC MONOCARBOXYLIC ACIDS, 0.5-2.5 PARTS OF A GRANULAR, WATERINSOLUBLE, HEAT-STABLE POWDER SUBSTANTIALLY PASSING A 100-MESH SCREEN AND BEING RETAINED ON A 325-MESH SCREEN, SAID POWDER BEING BOTH INCOMPATIBLE WITH AND CHEMICALLY INERT WITH RESPECT TO CELLULOSE DERIVATIVE PLASTICS, AND 10-25 PARTS OF A VOLATILE LIQUID WHICH IS A NON-SOLVENT FOR SAID CELLULOSE DERIVATIVE AT 70*F. AND A SOLVENT THEREFOR AT 160*F.
References Cited (Backward Citations)
US2242372A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-19 | 1953-12-19 | 1954-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-19 | 1957-12-19 | 1958-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-19 | 1961-12-19 | 1962-06-20 | $7700.00 | Window Closed / Lapsed |