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Patent US3068545A successfully refreshed from Google Patents.
US3068545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Napped fibrous regenerated sponge structure and process of making same
Assignee: EIDP Inc
•
Filing: 1960-03-03
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Granted: 1962-12-18
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Expires: 1980-03-03
Abstract
No abstract record available.
Inventors
- 👤 Stiner Cyril William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:55
CPC Classifications
C; C08; C08J; C08J9/00; B; B29; B29C; B29C44/00; C08J2301/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T428/2907
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
26 words
A REGENERATED CELLULOSE SPONGE STRUCTURE HAVING REINFORCING STAPLE FIBERS DISTRIBUTED THROUGHOUT, THE ENDS OF AT LEAST A PORTION OF SAID FIBES EXTENDING OUTSIDE THE SPONGE STRUCTURE.
Claim 2
Dependent Claim
26 words
A REGENERATED CELLULOSE SPONGE STRUCTURE HAVING REINFORCING STAPLE FIBERS DISTRIBUTED THROUGHOUT, THE ENDS OF AT LEAST A PORTION OF SAID FIBES EXTENDING OUTSIDE THE SPONGE STRUCTURE.
Claim 3
Dependent Claim
81 words
IN THE PROCESS OF PREPARING A REGENERATED CELLULOSE SPONGE STRUCTURE WHICH COMPRISES DISPERSING REINFORCING STAPLE FIBERS AND GLAUBER''S SALT CRYSTALS IN A VISCOSE SOLUTION, SHAPING THE COMPOSITION, REGENERATING CELLULOSE FROM THE VISCOSE, REMOVING SAID SALT CRYSTALS FROM SAID STRUCTURE AND DRYING SAID STRUCTURE, WHEEBY A SKIN OF REGENERATED CELLULOSE IS FORMED ON SAID STRUCTURE, THE IMPROVEMENT WHICH COMPRISES MECHANICALLY ABARADING SAID SKIN FROM SAID STRUCTURE AND SIMUTANEOUSLY TEASING THE ENDS OF A SUBSTANTIAL PORTION OF SAID FIBERS FROM THE REGENERATED CELLULOSE.
Claim 4
Dependent Claim
81 words
IN THE PROCESS OF PREPARING A REGENERATED CELLULOSE SPONGE STRUCTURE WHICH COMPRISES DISPERSING REINFORCING STAPLE FIBERS AND GLAUBER''S SALT CRYSTALS IN A VISCOSE SOLUTION, SHAPING THE COMPOSITION, REGENERATING CELLULOSE FROM THE VISCOSE, REMOVING SAID SALT CRYSTALS FROM SAID STRUCTURE AND DRYING SAID STRUCTURE, WHEEBY A SKIN OF REGENERATED CELLULOSE IS FORMED ON SAID STRUCTURE, THE IMPROVEMENT WHICH COMPRISES MECHANICALLY ABARADING SAID SKIN FROM SAID STRUCTURE AND SIMUTANEOUSLY TEASING THE ENDS OF A SUBSTANTIAL PORTION OF SAID FIBERS FROM THE REGENERATED CELLULOSE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |