US3110602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
The method of producing a regenerated cellulose sponge
Assignee: Nylonge Corp
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Filing: 1960-04-20
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Granted: 1963-11-12
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Expires: 1980-04-20
Abstract
No abstract record available.
Inventors
- 👤 Politzer Alfred
- 👤 James C H Teng
- 👤 Singh Trilochan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:53
CPC Classifications
C; C08; C08J; C08J9/00; A; A47; A47K; A47K7/00; A47K7/02; C08J2301/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
THE METHOD OF PRODUCING A REGENERATED CELLULOSE SPONGE COMPRISING THE STEPS OF FIRST IMMERSING A FIBROUS MATERIAL INTO AN AQUEOUS SOLUTION OF A SURFACE ACTIVE WETTING AGENT OF A CONCENTRATION BETWEEN ABOUT 0.1% AND 1.0% AND AT A RATIO OF WETTING AGENT SOLUTION TO FIBERS OF ABOUJT 3:1 TO 9:1, THEREAFTER ADMIXING SAID FIBERS AND SAID WETTING AGENT SOLUTION WITH A VISCOSE SOLUTION AND A PORE-FORMING SUBSTANCE WHEREBY TO UNIFORMLY DISPERSE SAID FIBERS AND SAID WETTING AGENT SOLUTION AND SAID POREFORMING SUBSTANCE THROUGHOUT SAID VISCOSE, SAID WETTING AGENT BEING INTRODUCED INTO SAID SOLUTION IN AN AMOUNT BETWEEN ABOUT 0.2% AND 3.2% OF THE CELLLULOSE CONTENT OF SAID VISCOSE, AND THEREAFTER COAGULATING SAID VISCOSE AND REGENERATING THE CELLULOSE THEREIN.
Claim 2
Independent Claim
118 words
THE METHOD OF PRODUCING A REGENERATED CELLULOSE SPONGE COMPRISING THE STEPS OF FIRST IMMERSING A FIBROUS MATERIAL INTO AN AQUEOUS SOLUTION OF A SURFACE ACTIVE WETTING AGENT OF A CONCENTRATION BETWEEN ABOUT 0.1% AND 1.0% AND AT A RATIO OF WETTING AGENT SOLUTION TO FIBERS OF ABOUJT 3:1 TO 9:1, THEREAFTER ADMIXING SAID FIBERS AND SAID WETTING AGENT SOLUTION WITH A VISCOSE SOLUTION AND A PORE-FORMING SUBSTANCE WHEREBY TO UNIFORMLY DISPERSE SAID FIBERS AND SAID WETTING AGENT SOLUTION AND SAID POREFORMING SUBSTANCE THROUGHOUT SAID VISCOSE, SAID WETTING AGENT BEING INTRODUCED INTO SAID SOLUTION IN AN AMOUNT BETWEEN ABOUT 0.2% AND 3.2% OF THE CELLLULOSE CONTENT OF SAID VISCOSE, AND THEREAFTER COAGULATING SAID VISCOSE AND REGENERATING THE CELLULOSE THEREIN.
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) | 1966-11-11 | 1967-05-13 | 1967-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-11 | 1971-05-13 | 1971-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-11 | 1975-05-13 | 1975-11-12 | $7700.00 | Window Closed / Lapsed |