US3954635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyglycolic acid fiber finish and method
Assignee: Wyeth Holdings LLC
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Filing: 1974-12-23
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Granted: 1976-05-04
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Expires: 1994-12-23
Abstract
Abstract A fiber finish for absorbable glycolic acid polymer fiber which consists of a mixture of a specific class of pharmaceutical grade light mineral oils and sorbitan monolaurate in xylene, and a method of finishing such fibers.
Inventors
- 👤 Percival W. Cummings, Jr.
- 👤 John H. Goodman, III
- 👤 Arthur Glick
- 👤 James B. McPherson, Jr.
- 👤 Edward J. McCusker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:07
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/10; D06M13/224; D06M13/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
136 words
A hydrophobic, biologically innocuous, fiber finish for absorbable glycolic acid polymer fiber consisting essentially of a xylene solution of a mixture of (1) from about 20% to about 80% of a pharmaceutical grade light mineral oil having an API Gravity of from about 31.1 to about 40.2, a Specific Gravity at 25°C. (USP) of from about 0.824 to about 0.870, a Viscosity at 100°F., SSU of from about 48 to about 105 and a Refractive Index at 25°C. of from about 1.456 to about 1.469 and, correspondingly, (2) from about 80% to about 20% of sorbitan monolaurate, said percentages being by weight based on the total weight of (1) and (2), the concentration of said mixture in said solution ranging from about 3% to about 25%, by weight, based on the total weight of the solution.
Claim 2
Dependent Claim
136 words
A hydrophobic, biologically innocuous, fiber finish for absorbable glycolic acid polymer fiber consisting essentially of a xylene solution of a mixture of (1) from about 20% to about 80% of a pharmaceutical grade light mineral oil having an API Gravity of from about 31.1 to about 40.2, a Specific Gravity at 25°C. (USP) of from about 0.824 to about 0.870, a Viscosity at 100°F., SSU of from about 48 to about 105 and a Refractive Index at 25°C. of from about 1.456 to about 1.469 and, correspondingly, (2) from about 80% to about 20% of sorbitan monolaurate, said percentages being by weight based on the total weight of (1) and (2), the concentration of said mixture in said solution ranging from about 3% to about 25%, by weight, based on the total weight of the solution.
Claim 3
Dependent Claim
23 words
A fiber finish according to claim 1 wherein (1) and (2) are each present in said mixture at a concentration of about 50.0%.
Claim 4
Dependent Claim
22 words
A fiber finish according to claim 1 wherein the concentration of said mixture in xylene ranges from about 5% to about 15%.
Claim 5
Dependent Claim
38 words
A method of finishing an absorbable glycolic acid polymer fiber which comprises applying to said filament from about 0.25% to about 4.0%, by weight, based on the total weight of said filament, of the solution of claim 1.
Claim 6
Dependent Claim
22 words
A method according to claim 4 wherein (1) and (2) are each present in said mixture at a concentration of about 50%.
Claim 7
Dependent Claim
21 words
A method according to claim 4 wherein the concentration of said mixture in xylene ranges from about 5% to about 15%.
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) | 1979-05-04 | 1979-11-03 | 1980-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-04 | 1983-11-03 | 1984-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-04 | 1987-11-03 | 1988-05-04 | $7700.00 | Window Closed / Lapsed |