Patent US2104269A successfully refreshed from Google Patents.
Patent US2910381A successfully refreshed from Google Patents.
US2910381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for coating metals with polyurethane resins
Assignee: PPG Industries Inc
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Filing: 1957-02-27
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Granted: 1959-10-27
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Expires: 1977-02-27
Abstract
No abstract record available.
Inventors
- 👤 Henry A Vogel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:27
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; B05D7/16; B32; B32B; B32B15/00; B32B15/04; B32B15/08; C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6212; Y; Y10; Y10S; Y10S220/00; Y10S220/917; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/31576; Y10T428/3158
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A PROCESS OF FORMING A TOUGH, ADHERENT CHEMICALLY RESISTANT SURFACE COATING UPON METAL COMPRISING THE STEPS OF APPLYING TO THE METAL A LIQUID SURFACE PREPARATION COAT CONTAINING PHOSPHORIC ACID AND THE SOLIDS OF THE CEHICLE OF WHICH CONSIST ESSENTIALLY OF A FILM-FORMING POLYVINYLBUTYRAL ADAPTED TO DRY UNDER ATMOSPHERIC CONDITIONS, DRYING THE LIQUID SURFACE PREPARATION COATING, APPLYING TO THE DURFACE PREPARATION COATING A LIQUID INTERMEDIATE COATING, THE VEHICLE OF WHICH CONSIST ESSENTIALLY OF A FILM-FORMING VINYL CHLORISE-VINYL ACETATE INTERPOLYMER CONTAINING AVAILABLE HYDROXYL GROUPS AND BEING PIGMENTED WITH RED LEAD, DRYING SAID COATING AND APPLYING THERETO A FINIDHING COATING THE SOLIDS-FORMING CONSTITUNTS OF THE VEHICLE OF WHICH CONSIST ESSENTIALLY OF AN ORGANIC DIISOCYANATE AND A SATURATED LIQUID POLYESTER OF A POLYHYDRIC ALCOHOL AND A POLYCARBOXYLIC ACID, SAID POLYESTER BEING FREE OF ETHYLENIC GROUPS AND CONTAINING FREE HYDROXYLS, AND THEN CURING THE LATTER COATING.
Claim 2
Dependent Claim
141 words
A PROCESS OF FORMING A TOUGH, ADHERENT CHEMICALLY RESISTANT SURFACE COATING UPON METAL COMPRISING THE STEPS OF APPLYING TO THE METAL A LIQUID SURFACE PREPARATION COAT CONTAINING PHOSPHORIC ACID AND THE SOLIDS OF THE CEHICLE OF WHICH CONSIST ESSENTIALLY OF A FILM-FORMING POLYVINYLBUTYRAL ADAPTED TO DRY UNDER ATMOSPHERIC CONDITIONS, DRYING THE LIQUID SURFACE PREPARATION COATING, APPLYING TO THE DURFACE PREPARATION COATING A LIQUID INTERMEDIATE COATING, THE VEHICLE OF WHICH CONSIST ESSENTIALLY OF A FILM-FORMING VINYL CHLORISE-VINYL ACETATE INTERPOLYMER CONTAINING AVAILABLE HYDROXYL GROUPS AND BEING PIGMENTED WITH RED LEAD, DRYING SAID COATING AND APPLYING THERETO A FINIDHING COATING THE SOLIDS-FORMING CONSTITUNTS OF THE VEHICLE OF WHICH CONSIST ESSENTIALLY OF AN ORGANIC DIISOCYANATE AND A SATURATED LIQUID POLYESTER OF A POLYHYDRIC ALCOHOL AND A POLYCARBOXYLIC ACID, SAID POLYESTER BEING FREE OF ETHYLENIC GROUPS AND CONTAINING FREE HYDROXYLS, AND THEN CURING THE LATTER 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) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |