US2536056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple heating-step method of producing a composite coated object
Assignee: Heresite and Chemical Co
•
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 13:13
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.
References Cited (Backward Citations)
US735278A
Cited
US1019407A
Cited
US1107703A
Cited
US1242593A
Cited
US1586850A
Cited
US1497396A
Cited
US1795703A
Cited
US1695566A
Cited
US1987694A
Cited
US2011213A
Cited
US2218373A
Cited
US2185477A
Cited
US2198939A
Cited
US2376213A
Cited
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 |