US2910380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making seamless viscoseregenerated cellulose tubing
Assignee: Union Carbide Corp
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Filing: 1955-10-13
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Granted: 1959-10-27
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Expires: 1975-10-13
Abstract
No abstract record available.
Inventors
- 👤 Edward A Shiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:18
CPC Classifications
A; A22; A22C; A22C13/00; A22C13/0013
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN THE METHOS OF PRODUCING SEAMLESS VISCOSEKREGENERATED CELLILOSE TUBING HAVING A FIBROUS TUBING EMBEDDED THEREIN, THE STEPS OF APPLYING VISCOSE TO AT LEAST ONE SURFACE OF THE PERIPHERAL WALL OF A FIBROUS TUBING, REGENERATING CELLULOSE FROM THE VISCOSE IN SITU ON SAID FIBROUS TUBING AND PRIOR THE REGENERATING OF THE VISCOSE, HEATTUBING AND PRIOR TO THE REGENERATION OF THE VISCOSE, HEATPERMITTING THE VISCOSE OF REDUCED VISCOSITY TO PENETRATE SAID FIBROUS TUBING, THE TEMPERATURE TO WHICH THE VISCOSE IS HEATED BEING ABOVE ROOM TEMPERATURE AND THE TIME DURING WHICH IT IS MAINTAINED ABOVE ROOM TEMPERATURE BEING INSUFFICIENT TO CAUSE THE VISCOSE TO BEGIN TO GEL WITH A RESULTANT INCREASE IN VISCOSITY
Claim 2
Dependent Claim
110 words
IN THE METHOS OF PRODUCING SEAMLESS VISCOSEKREGENERATED CELLILOSE TUBING HAVING A FIBROUS TUBING EMBEDDED THEREIN, THE STEPS OF APPLYING VISCOSE TO AT LEAST ONE SURFACE OF THE PERIPHERAL WALL OF A FIBROUS TUBING, REGENERATING CELLULOSE FROM THE VISCOSE IN SITU ON SAID FIBROUS TUBING AND PRIOR THE REGENERATING OF THE VISCOSE, HEATTUBING AND PRIOR TO THE REGENERATION OF THE VISCOSE, HEATPERMITTING THE VISCOSE OF REDUCED VISCOSITY TO PENETRATE SAID FIBROUS TUBING, THE TEMPERATURE TO WHICH THE VISCOSE IS HEATED BEING ABOVE ROOM TEMPERATURE AND THE TIME DURING WHICH IT IS MAINTAINED ABOVE ROOM TEMPERATURE BEING INSUFFICIENT TO CAUSE THE VISCOSE TO BEGIN TO GEL WITH A RESULTANT INCREASE IN VISCOSITY
References Cited (Backward Citations)
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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) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |