US3139352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of using a masking coating of a telomer of tetrafluoroethylene
Assignee: EIDP Inc
•
Filing: 1962-08-08
•
Granted: 1964-06-30
•
Expires: 1982-08-08
Abstract
No abstract record available.
Inventors
- 👤 Coyner Eugene Casper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:27
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A PROCESS WHICH COMPRISES COATING A PORTION OF A SURFACE WITH A DISPERSION OF A WAX-LIKE TELOMER OF TETRAFLUOROETHYLENE IN A VOLATILE SOLVENT, SAID TELOMER HAVING A MOLECULAR WEIGHT WITHIN THE RANGE OF 1,000 TO ABOUT 20,000, AND ALLOWING SAID SOVLENT TO EVAPORATE THEREBY FORMING A TEMPORARY ANTIADHESIVE TELOMER COATING ON SAID PORTION OF SAID SURFACE, FOLLOWED BY APPLYING TO THE ADJACENT NON-TELOMER COATED PORTION OF SAID SURFACE A THIN LAYER OF A PERMANENTLY-ADHERING SURFACE COATING AND ALLOWING SAID SURFACE COATING TO SET, AND THEREAFTER REMOVING FROM SAID SURFACE SAID TELOMER COATING AND SUCH PORTION OF SAID PERMANENTLY-ADHERING SURFACE COATING AS MAY BE APPLIED THEREON WHEN APPLYING SAID PERMANENTLY-ADHERING SURFACE COATING.
Claim 2
Dependent Claim
111 words
A PROCESS WHICH COMPRISES COATING A PORTION OF A SURFACE WITH A DISPERSION OF A WAX-LIKE TELOMER OF TETRAFLUOROETHYLENE IN A VOLATILE SOLVENT, SAID TELOMER HAVING A MOLECULAR WEIGHT WITHIN THE RANGE OF 1,000 TO ABOUT 20,000, AND ALLOWING SAID SOVLENT TO EVAPORATE THEREBY FORMING A TEMPORARY ANTIADHESIVE TELOMER COATING ON SAID PORTION OF SAID SURFACE, FOLLOWED BY APPLYING TO THE ADJACENT NON-TELOMER COATED PORTION OF SAID SURFACE A THIN LAYER OF A PERMANENTLY-ADHERING SURFACE COATING AND ALLOWING SAID SURFACE COATING TO SET, AND THEREAFTER REMOVING FROM SAID SURFACE SAID TELOMER COATING AND SUCH PORTION OF SAID PERMANENTLY-ADHERING SURFACE COATING AS MAY BE APPLIED THEREON WHEN APPLYING SAID PERMANENTLY-ADHERING SURFACE COATING.
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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) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |