Patent US4658835A successfully refreshed from Google Patents.
US3307971A
Expired / Lapsed
US
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Methods of altering the surface characteristics of solid resin surfaces and articlesproduced thereby
Assignee: Sutures Inc
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Filing: 1963-09-30
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Granted: 1967-03-07
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Expires: 1983-09-30
Abstract
No abstract record available.
Inventors
- 👤 Leonard D Kurtz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:29
CPC Classifications
A; A61; A61L; A61L17/00; A61L17/14; A61L17/145; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A METHOD OF MODIFYING CHARACTERISTICS OF A SURFACE CONSISTING ESSENTIALLY OF A SOLID SYNTHETIC RESIN SELECTED FROM THE GROUP CONSISTING OF POLYTETRAFLUOROETHYLENE, POLYESTER REACTION PRODUCT OF AN ORGANIC POLYCARBOXYLIC ACID AND AN ORGANIC OLYOL, AND MIXTURES THEREOF, COMPRISING THE STEPS OF CONTACTING SAID SURFACE WITH A SOLUTION OF SOLID POLYESTER REACTION PRODUCT AND AN ORGANIC POLYCARBOXYLIC ACID AND AN ORGANIC POLYOL IN A SOLVENT TO DEPOSIT A COATING OF SAID POLYESTER ON SAID SYNTHETIC RESIN SURFACE, REMOVING SOLVENT FROM SAID COATING TO PROVIDE SOLID POLYESTER ON SAID SURFACE, AND SUBJECTING THE SOLID POLYESTER AND SUBJACENT SOLID RESIN SURFACE TO HEAT AND PRESSURE TO ADHERE SAID SOLID POLYESTE TO SAID SURFACE.
Claim 2
Independent Claim
110 words
A METHOD OF MODIFYING CHARACTERISTICS OF A SURFACE CONSISTING ESSENTIALLY OF A SOLID SYNTHETIC RESIN SELECTED FROM THE GROUP CONSISTING OF POLYTETRAFLUOROETHYLENE, POLYESTER REACTION PRODUCT OF AN ORGANIC POLYCARBOXYLIC ACID AND AN ORGANIC OLYOL, AND MIXTURES THEREOF, COMPRISING THE STEPS OF CONTACTING SAID SURFACE WITH A SOLUTION OF SOLID POLYESTER REACTION PRODUCT AND AN ORGANIC POLYCARBOXYLIC ACID AND AN ORGANIC POLYOL IN A SOLVENT TO DEPOSIT A COATING OF SAID POLYESTER ON SAID SYNTHETIC RESIN SURFACE, REMOVING SOLVENT FROM SAID COATING TO PROVIDE SOLID POLYESTER ON SAID SURFACE, AND SUBJECTING THE SOLID POLYESTER AND SUBJACENT SOLID RESIN SURFACE TO HEAT AND PRESSURE TO ADHERE SAID SOLID POLYESTE TO SAID SURFACE.
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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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |