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US3285773A
Expired / Lapsed
US
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Vitreous enamels for hot water tanks
Assignee: Vibrantz Corp
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Filing: 1965-05-10
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Granted: 1966-11-15
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Expires: 1985-05-10
Abstract
No abstract record available.
Inventors
- 👤 Lester M Dunning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:27
CPC Classifications
C; C03; C03C; C03C4/00; Y; Y10; Y10T; Y10T428/00; Y10T428/19; Y10T428/192; Y10T428/195
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
AS AN ARTICLE OF MANUFACTURE A METALLIC SUBSTRATE HAVING FUSED THEREON AN AMORPHOUS VITREOUS COATING WITH A CRYSTALLINE PHASE OF ALPHA QUARTZ DISPERSED THERETHROUGH, SAID COATING BEING THE PRODUCT OF AN ENAMEL SLIP APPLIED TO AND FUSED ON SAID METALLIC SUBSTRATE, SAID SLIP HAVING HAD CONTAINED A MILLED FRIT, SAID FRIT HAVING HAD CONTAINED THEREIN AT LEAST 4.6% BY WEIGHT ZRO2, SAID SLIP HAVING HAD ADDED THERETO PRIOR TO APPLICATION TO SAID SUBSTRATE FROM ABOUT 20% TO ABOUT 70% QUARTZ, BASED ON THE WEIGHT OF SAID FRIT WITHIN SAID SLIP, A PORTION OF SAID QUARTZ HAVING BEEN TAKEN INTO SOLUTION IN THE FUSED COATING, THE REMAINDER OF SAID QUARTZ COMPRISING THE AFORMENTIONED CRYSTALLINE PHASE DISPERSED THROUGHOUT SAID ENEMEL COATING.
Claim 2
Dependent Claim
119 words
AS AN ARTICLE OF MANUFACTURE A METALLIC SUBSTRATE HAVING FUSED THEREON AN AMORPHOUS VITREOUS COATING WITH A CRYSTALLINE PHASE OF ALPHA QUARTZ DISPERSED THERETHROUGH, SAID COATING BEING THE PRODUCT OF AN ENAMEL SLIP APPLIED TO AND FUSED ON SAID METALLIC SUBSTRATE, SAID SLIP HAVING HAD CONTAINED A MILLED FRIT, SAID FRIT HAVING HAD CONTAINED THEREIN AT LEAST 4.6% BY WEIGHT ZRO2, SAID SLIP HAVING HAD ADDED THERETO PRIOR TO APPLICATION TO SAID SUBSTRATE FROM ABOUT 20% TO ABOUT 70% QUARTZ, BASED ON THE WEIGHT OF SAID FRIT WITHIN SAID SLIP, A PORTION OF SAID QUARTZ HAVING BEEN TAKEN INTO SOLUTION IN THE FUSED COATING, THE REMAINDER OF SAID QUARTZ COMPRISING THE AFORMENTIONED CRYSTALLINE PHASE DISPERSED THROUGHOUT SAID ENEMEL COATING.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |