Patent US3255142A successfully refreshed from Google Patents.
US3255142A
Expired / Lapsed
US
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Process for the segmentation of polymer gell
Assignee: Wyeth Holdings LLC
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Filing: 1963-11-07
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Granted: 1966-06-07
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Expires: 1983-11-07
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Terenzi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:13
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C08J3/12; C08J3/14; C08J9/00; C08J9/16; C08J2300/00; C08J2300/10; C08J2333/00; C08J2333/24; C08J2333/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A METHOD OF FORMING A FREE-LOWING SOLUTIO FROM A HIGHLY VISCOUS, GELL-LIKE POLYMER SOLUTION WHICH COMPRISES EXTRUDING SAID VISCOUS SOLUTION AS 1/64 TO 1/2 INCH DIAMETER EXTRUDATES ITO A TRANSVERSELY FLOWING STREAM OF LIQUID SOLVENT FOR SAID POLYMER, SAID SOLVENT STREAM HAVING A FLOW VELOCITY SUFFICIENT TO SEVER SAID EXTRUDATES INTO SEGMENTS ABOUT 1/8 TO 2 INCHES LONG AND DILUTING SAID SEGMENTS OF POLYMER TO FROM A FREE-FLOWING SOLUTION.
Claim 2
Independent Claim
69 words
A METHOD OF FORMING A FREE-LOWING SOLUTIO FROM A HIGHLY VISCOUS, GELL-LIKE POLYMER SOLUTION WHICH COMPRISES EXTRUDING SAID VISCOUS SOLUTION AS 1/64 TO 1/2 INCH DIAMETER EXTRUDATES ITO A TRANSVERSELY FLOWING STREAM OF LIQUID SOLVENT FOR SAID POLYMER, SAID SOLVENT STREAM HAVING A FLOW VELOCITY SUFFICIENT TO SEVER SAID EXTRUDATES INTO SEGMENTS ABOUT 1/8 TO 2 INCHES LONG AND DILUTING SAID SEGMENTS OF POLYMER TO FROM A FREE-FLOWING SOLUTION.
References Cited (Backward Citations)
US3053819A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |