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US3046608A
Expired / Lapsed
US
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Cellulose derivative materials
Assignee: Acordis UK Ltd
•
Filing: 1958-04-16
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Granted: 1962-07-31
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Expires: 1978-04-16
Abstract
No abstract record available.
Inventors
- 👤 Grebby John William
- 👤 Downing John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:20
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/16; C08J9/18; C08J9/04; C08J9/12; C08J9/125; D; D04; D04H; D04H1/00; D04H1/40; D04H1/54; C08J2301/00; C08J2301/08; C08J2301/10; C08J2301/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A PROCESS FOR THE PRODUCTION OF A COHERENT FORAMINOUS PRODUCT WHICH COMPRISES FORMING A LOOSE AND SUBSTANTIALLY UNCONFINED BODY OF PARTICLES OF CELLULOSE ACETATE HAVING AN ACETYL VALUE OF 40 TO 50 PERCENT, SAID CELLULOSE ACETATE BEING CAPABLE OF RETAINING AT LEAST TWICE ITS WEIGHT OF WATER WHEN SOAKED IN COLD WATER AND ALLOWED TO DRAIN, BRINGING SAID BODY OF CELLULOSE ACETATE INTO DIRECT CONTACT
Claim 2
Dependent Claim
65 words
A PROCESS FOR THE PRODUCTION OF A COHERENT FORAMINOUS PRODUCT WHICH COMPRISES FORMING A LOOSE AND SUBSTANTIALLY UNCONFINED BODY OF PARTICLES OF CELLULOSE ACETATE HAVING AN ACETYL VALUE OF 40 TO 50 PERCENT, SAID CELLULOSE ACETATE BEING CAPABLE OF RETAINING AT LEAST TWICE ITS WEIGHT OF WATER WHEN SOAKED IN COLD WATER AND ALLOWED TO DRAIN, BRINGING SAID BODY OF CELLULOSE ACETATE INTO DIRECT CONTACT
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) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |