Patent US4035616A successfully refreshed from Google Patents.
Patent US3372053A successfully refreshed from Google Patents.
US3372053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating process
Assignee: Anchor Hocking Glass Corp
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Filing: 1963-07-22
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Granted: 1968-03-05
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Expires: 1983-07-22
Abstract
No abstract record available.
Inventors
- 👤 Daniel N Mccarthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:16
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/34; C03C17/42; B; B05; B05D; B05D5/00; B05D5/08; B05D5/083; B05D5/086; C03C17/001; C03C17/003; C03C17/004; C03C17/28; C03C17/32; C03C17/328; C03C2217/00; C03C2217/40; C03C2217/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
THE METHOD OF FIRMLY ATTACHING COATINGS OF POLYTETRAFLUOROETHYLENE TO THE INTERIOR SMOOTH SURFACES OF GLASS COOKING VESSELS WHICH COMPRISES THE STEPS OF BRINGING THE VESSELS TO A UNIFORM TEMPERATURE FROM BETWEEN ROOM TEMPERATURE AND ABOUT 100*F., MIXING GLASS FRIT PARTICLES WITH A TEMPORARY TACKY BINDER, SPRAYING THE FRIT PARTICLES GENERALLY UNIFORMLY OVER SAID SURFACES OF THE VESSELS WITH THE FRIT PARTICLE SPACING BEING LESS THAN ABOUT ONE FRIT DIAMETER, HEATING THE VESSELS AND FRIT FOR DRIVING OFF THE BINDER AND FUSING THE SURFACES ONLY OF THE FRIT PARTICLES AND BRINGING SAID SURFACES OF THE VESSELS TO A TEMPERATURE NEAR ITS FUSING TEMPERATURE, THEREAFTER LOWERING THE TEMLPERATURE OF SAID VESSEL AND FRIT SURFACES WHEREBY THE PAR-L TICLES ARE ADHERED TO ONE ANOTHER AND FORM IRREGULAR AND ROUGHENED LAYERS ON SAID SURFACES OF THE VESSELS, APPLYING A LIQUID DISPERSIN OF POLYTETRAFLUOROETHYLENE OF SUFFICIENT DEPTH TO FORM A FIRST COATING COVERING SAID LAYER ON EACH OF SAID VESSELS, HARDENING SAID COATING, APPLYING A MORE VISCOUS LIQUID DISPERSION OF POLYTETRAFLUOROETHYLENE TO FORM A THICKER FINAL COATING ON EACH OF SAID VESSELS, AND HARDENING SAID FINAL COATING.
Claim 2
Independent Claim
182 words
THE METHOD OF FIRMLY ATTACHING COATINGS OF POLYTETRAFLUOROETHYLENE TO THE INTERIOR SMOOTH SURFACES OF GLASS COOKING VESSELS WHICH COMPRISES THE STEPS OF BRINGING THE VESSELS TO A UNIFORM TEMPERATURE FROM BETWEEN ROOM TEMPERATURE AND ABOUT 100*F., MIXING GLASS FRIT PARTICLES WITH A TEMPORARY TACKY BINDER, SPRAYING THE FRIT PARTICLES GENERALLY UNIFORMLY OVER SAID SURFACES OF THE VESSELS WITH THE FRIT PARTICLE SPACING BEING LESS THAN ABOUT ONE FRIT DIAMETER, HEATING THE VESSELS AND FRIT FOR DRIVING OFF THE BINDER AND FUSING THE SURFACES ONLY OF THE FRIT PARTICLES AND BRINGING SAID SURFACES OF THE VESSELS TO A TEMPERATURE NEAR ITS FUSING TEMPERATURE, THEREAFTER LOWERING THE TEMLPERATURE OF SAID VESSEL AND FRIT SURFACES WHEREBY THE PAR-L TICLES ARE ADHERED TO ONE ANOTHER AND FORM IRREGULAR AND ROUGHENED LAYERS ON SAID SURFACES OF THE VESSELS, APPLYING A LIQUID DISPERSIN OF POLYTETRAFLUOROETHYLENE OF SUFFICIENT DEPTH TO FORM A FIRST COATING COVERING SAID LAYER ON EACH OF SAID VESSELS, HARDENING SAID COATING, APPLYING A MORE VISCOUS LIQUID DISPERSION OF POLYTETRAFLUOROETHYLENE TO FORM A THICKER FINAL COATING ON EACH OF SAID VESSELS, AND HARDENING SAID FINAL 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) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |