US2741565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming a protective glaze on a surface
Assignee: Parker Halversen Co
•
Filing: 1951-11-01
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Granted: 1956-04-10
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Expires: 1971-11-01
Abstract
No abstract record available.
Inventors
- 👤 Roy A Halversen
- 👤 John O Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:17
CPC Classifications
C; C03; C03C; C03C8/00; C23; C23C; C23C24/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
67 words
THE METHOD FOR FORMING AN ADHERENT CONTINUOUS DEPOSIT ON THE SURFACE OF A SUBSTANCE MELTING ABOVE ABOUT 480* FAHRENHEIT WHOSE SURFACE COMPRISES AN INORGANIC METAL COMPOUND MELTING ABOVE ABOUT 480* FAHRENHEIT WHICH INCLUDES THE STEPS OF HEATING AT LEAST THE SURFACE OF THE SUBSTANCE AT A TEMPERATURE BETWEEN ABOUT 480* FAHRENHEIT AND THE MELTING POINT OF THE SUBSTANCE AND CONTACTING THE HEATED SURFACE WITH PHOSPHORUS PENTOXIDE VAPOR.
References Cited (Backward Citations)
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US1752792A
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US2248432A
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US2170387A
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US2232462A
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US2281167A
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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) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |