Patent US2548455A successfully refreshed from Google Patents.
US2548455A
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Cross linking
Assignee: EIDP Inc
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Filing: 1949-07-20
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Granted: 1951-04-10
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Expires: 1969-07-20
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Walker
- 👤 Stanley E Kokowicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:08
CPC Classifications
C; C08; C08B; C08B15/00; C08B15/10; C08B31/00; C08B31/003; D; D06; D06M; D06M13/00; D06M13/10; D06M13/12; D06M13/123; Y; Y10; Y10S; Y10S8/00; Y10S8/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
THE PROCESS OF CROSS-LINKING THE MOLECULES OF OF A SUBSTANCE TAKEN FROM THE GROUP CONSISTING OF CELLULOSE, REGENERATED CELLULOSE AND STARCH WHICH COMPRISES CONTACTING THE SAID SUBSTANCE WITH UPWARDS OF ABOUT 2% BY WEIGHT OF SAID SUBSTANCE OF 2.5-DIMETHOXYTETRAHYDROFURAN IN THE PRESENCE OF SUFFICIENT WATER TO HYDROLYZE THE 2.5DIMETHOXYTETRAHYDROFURAN AT A PH OF BETWEEN 2.0 AND 6.0 AND AT A TEMPERATURE OF BETWEEN 20* C. AND 150* C.
Claim 2
Dependent Claim
68 words
THE PROCESS OF CROSS-LINKING THE MOLECULES OF OF A SUBSTANCE TAKEN FROM THE GROUP CONSISTING OF CELLULOSE, REGENERATED CELLULOSE AND STARCH WHICH COMPRISES CONTACTING THE SAID SUBSTANCE WITH UPWARDS OF ABOUT 2% BY WEIGHT OF SAID SUBSTANCE OF 2.5-DIMETHOXYTETRAHYDROFURAN IN THE PRESENCE OF SUFFICIENT WATER TO HYDROLYZE THE 2.5DIMETHOXYTETRAHYDROFURAN AT A PH OF BETWEEN 2.0 AND 6.0 AND AT A TEMPERATURE OF BETWEEN 20* C. AND 150* C.
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) | 1954-04-09 | 1954-10-09 | 1955-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-09 | 1958-10-09 | 1959-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-09 | 1962-10-09 | 1963-04-10 | $7700.00 | Window Closed / Lapsed |