Patent US2835618A successfully refreshed from Google Patents.
US2835618A
Expired / Lapsed
US
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Solution and method for producing heat resistant electrical insulation coatings on ferrous surfaces
Assignee: Parker Rust Proof Co
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Filing: 1955-03-09
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Granted: 1958-05-20
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Expires: 1975-03-09
Abstract
No abstract record available.
Inventors
- 👤 Keller Heinz
- 👤 Brodt Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:03
CPC Classifications
C; C23; C23D; C23D5/00; C23D5/10; H; H01; H01B; H01B3/00; H01B3/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A COMPOSITION OF MATTER COMPRISING A DISPERSION CONSISTING ESSENTIALLY OF 200-400 GRAMS/LITER OF AT LEAST ONE THERMALLY DECOMPOSABLE PHOSPHATE SELECTED FROM THE GROUP CONSISTING OF AMMONIUM PHOSPHATES, ALIPHATIC SUBSTITUTED AMMONIUM PHOSPHATES HAVING LESS THAN 7 CARBON ATOMS IN ANY SUBSTITUENT GROUP, MONOESTERS, DIESTERS AND MIXED MONO AND DI-ESTERS OF PHOSPHORIC ACID CONTAINING NOT MORE THAN 8 CARBON ATOMS, 10-70 GRAMS/LITER OF A HEAT RESISTANT MATERIAL SELECTED FROM THE GROUP CONSISTING OF SILICIC ACID, MICA, HYDRATED ALUMINUM SILICATE CLAYS, MAGNESIUM OXIDE AND ALUMINUM OXIDE, 5-50 GRAMS/ LITER OF AT LEAST ONE THERMALLY DECOMPOSABLE CHROMATE SELECTED FROM THE GROUP CONSISTING OF AMMONIUM CHROMATES AND ALIPHATIC SUBSTITUTED AMMONIUM CHROMATES HAVING LESS THAN 7 CARBON ATOMS IN ANY SUBSTITUENT GROUP, 12-26 GRAMS/LITER OF AN ION SELECTED FROM THE GROUP CONSISTING OF THE CALCIUM ION AND THE BARIUM ION, AND A SOLVENT SELECTED FROM THE GROUP CONSISTING OF WATER, ALCOHOL AND MIXTURES THEREOF.
Claim 2
Dependent Claim
148 words
A COMPOSITION OF MATTER COMPRISING A DISPERSION CONSISTING ESSENTIALLY OF 200-400 GRAMS/LITER OF AT LEAST ONE THERMALLY DECOMPOSABLE PHOSPHATE SELECTED FROM THE GROUP CONSISTING OF AMMONIUM PHOSPHATES, ALIPHATIC SUBSTITUTED AMMONIUM PHOSPHATES HAVING LESS THAN 7 CARBON ATOMS IN ANY SUBSTITUENT GROUP, MONOESTERS, DIESTERS AND MIXED MONO AND DI-ESTERS OF PHOSPHORIC ACID CONTAINING NOT MORE THAN 8 CARBON ATOMS, 10-70 GRAMS/LITER OF A HEAT RESISTANT MATERIAL SELECTED FROM THE GROUP CONSISTING OF SILICIC ACID, MICA, HYDRATED ALUMINUM SILICATE CLAYS, MAGNESIUM OXIDE AND ALUMINUM OXIDE, 5-50 GRAMS/ LITER OF AT LEAST ONE THERMALLY DECOMPOSABLE CHROMATE SELECTED FROM THE GROUP CONSISTING OF AMMONIUM CHROMATES AND ALIPHATIC SUBSTITUTED AMMONIUM CHROMATES HAVING LESS THAN 7 CARBON ATOMS IN ANY SUBSTITUENT GROUP, 12-26 GRAMS/LITER OF AN ION SELECTED FROM THE GROUP CONSISTING OF THE CALCIUM ION AND THE BARIUM ION, AND A SOLVENT SELECTED FROM THE GROUP CONSISTING OF WATER, ALCOHOL AND MIXTURES THEREOF.
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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) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |