Patent US2536056A successfully refreshed from Google Patents.
US2536056A
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Multiple heating-step method of producing a composite coated object
Assignee: Heresite and Chemical Co
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Filing: 1944-04-22
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Granted: 1951-01-02
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Expires: 1964-04-22
Abstract
No abstract record available.
Inventors
- 👤 Charles H Hempel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:38
CPC Classifications
C; C09; C09D; C09D161/00; C09D161/04; C09D161/06; B; B05; B05D; B05D3/00; B05D3/02; B05D3/0209; C09D7/00; C09D7/20; B05D3/0254; C08; C08K; C08K5/00; C08K5/0008; C08K5/0016; C08K5/04; C08K5/07; C08K5/16; C08K5/17; C08K5/175; C08K5/49; C08K5/51; C08K5/52; C08K5/521; C08K5/523
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
142 words
THE MULTIPLE HEATING-STEP METHOD OF PRODUCING A COMPOSITE COATED OBJECT WHICH COMPRISES SEPRATELY COATING THE PARTS OF THE OBJECT WITH A FILM OF ALKALI-CATALYZED PHENOL-FORMALDEHYDE OIL FREE RESIN CONTAINING 5 TO 30 PER CENT BY WEIGHT OF THE RESIN OF A PLASTICIZER, SAID PLASTICIZER HAVING A BOILING POINT IN EXCESS OF 250* C. AND BEING INERT TO THE RESINIFYING REACTION, THE MIXTURE OF SAID RESIN AND PLASTICIZER BEING DISSOLVED IN A VOLATILE SOLVENT, SUBJECTING EACH OF THE PARTS TO A FIRST HEATING TO DRY THE MIXTURE AND EVAPORATE THE SOLVENT WHILE CONVERTING THE RESIN FILM TO THE B STAGE, ASSEMBLING THE OBJECT TO BRING THE COATINGS ON THE RESPECTIVE PARTS THEREOF INTO CONTACT AND THEN SUBJECTING THE ASSEMBLED OBJECT TO A SECOND HEATING TO CONVERT THE RESIN FILM TO THE C STAGE WHEREBY THE CONTACTING SURFACES BLEND TO FORM A CONTINUOUS SURFACE.
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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) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |