Patent US3521716A successfully refreshed from Google Patents.
Patent US3085034A successfully refreshed from Google Patents.
US3085034A
Expired / Lapsed
US
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Coating process
Assignee: Polymer Processes Inc
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Filing: 1958-07-10
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Granted: 1963-04-09
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Expires: 1978-07-10
Abstract
No abstract record available.
Inventors
- 👤 Ronald C Croessant
- 👤 Walter R Pascoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:01
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/18; B05D1/22; B05D1/24; C; C23; C23C; C23C24/00; C23C24/08; C23C24/10; C23C26/00; C23C8/00; C23C8/80; B05D2202/00; B05D3/00; B05D3/02; B05D3/0218; B05D3/10; B05D3/102; Y; Y10; Y10S; Y10S297/00; Y10S297/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A PROCESS FOR COATING A FERROUS ARTICLE WHICH COMPRISES OXIDIZING SAID ARTICLE TO PRODUCE AN OXIDE LAYER ON THE SURFACES OF SAID ARTICLE WHICH ARE TO BE COATED, WHICH LAYER HAS A THICKNESS CORRESPONDING AT LEAST TO THE YELLOW OXIDE STAGE AND WHICH LAYER IS FORMED BY OXIDATIION BEYOND THE BLUE STATE IN WHICH THE OXIDE IS FERROUS OXIDE (FEO) WHEREBY SAID LAYER COMPRISES GAMMA-FERRIC OXIDE (FE202) FERROSO-FERRIC OXIDE (FE304), OXIDES INTERMEDIATE OF SAID FOREGOING OXIDES AND MIXTURES OF SAID OXIDES, CONTACTING THE OXIDIZED SURFACES OF SAID ARTICLE WITH A FUSIBLE PULVERULENT COATING MATERIAL CONTAINING A SMALL PROPORTION UP TO ABOUT 5 PERCENT BY WEIGHT OF A FINELY DIVIDED SILICA AEROGEL AND FUSING THE PULVERULENT COATING MATERIAL TO FORM THE DESIRED COATING.
Claim 2
Dependent Claim
122 words
A PROCESS FOR COATING A FERROUS ARTICLE WHICH COMPRISES OXIDIZING SAID ARTICLE TO PRODUCE AN OXIDE LAYER ON THE SURFACES OF SAID ARTICLE WHICH ARE TO BE COATED, WHICH LAYER HAS A THICKNESS CORRESPONDING AT LEAST TO THE YELLOW OXIDE STAGE AND WHICH LAYER IS FORMED BY OXIDATIION BEYOND THE BLUE STATE IN WHICH THE OXIDE IS FERROUS OXIDE (FEO) WHEREBY SAID LAYER COMPRISES GAMMA-FERRIC OXIDE (FE202) FERROSO-FERRIC OXIDE (FE304), OXIDES INTERMEDIATE OF SAID FOREGOING OXIDES AND MIXTURES OF SAID OXIDES, CONTACTING THE OXIDIZED SURFACES OF SAID ARTICLE WITH A FUSIBLE PULVERULENT COATING MATERIAL CONTAINING A SMALL PROPORTION UP TO ABOUT 5 PERCENT BY WEIGHT OF A FINELY DIVIDED SILICA AEROGEL AND FUSING THE PULVERULENT COATING MATERIAL TO FORM THE DESIRED 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) | 1966-04-08 | 1966-10-08 | 1967-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-08 | 1970-10-08 | 1971-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-08 | 1974-10-08 | 1975-04-09 | $7700.00 | Window Closed / Lapsed |