US2668158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating compositions for metals containing a phenol formaldehyde resin and a phosphate
Assignee: Cosmocord Plastics Ltd
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Filing: 1950-11-06
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Granted: 1954-02-02
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Expires: 1970-11-06
Abstract
No abstract record available.
Inventors
- 👤 Robert H Sturm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:15
CPC Classifications
C; C09; C09D; C09D161/00; C09D161/04; C09D161/06; C09D161/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A LIQUID COATING COMPOSITION FOR APPLICATION TO SURFACES OF STEEL, OTHER FERROUS METALS, ZINC, ALUMINIUM OR ALLOYS THEREOF, COMPRISING A HOMOGENEOUS MIXTURE OF A THERMOSETTING PHENOLFORMALDEHYDE RESIN WITH A MODIFYING AGENT SELECTED FROM THE GROUP CONSISTING OF NATURAL RESINS, ABIETIC ACID AND METHYL ABIETATE, TOGETHER WITH AN ACIDIFIED METAL PHOSPHATE AND PHOSPHORIC ACID, SAID METAL PHOSPHATE BEING ADAPTED TO REACT WITH A METAL SURFACE TO WHICH THE COMPOSITION IS APPLIED TO FORM AN INSOLUBLE PHOSPHATE LAYER THEREON AND ALSO TO ACT WITH SAID PHOSPHORIC ACID AS A THERMO-SETTING CATALYST DURING STOVING.
Claim 2
Dependent Claim
91 words
A LIQUID COATING COMPOSITION FOR APPLICATION TO SURFACES OF STEEL, OTHER FERROUS METALS, ZINC, ALUMINIUM OR ALLOYS THEREOF, COMPRISING A HOMOGENEOUS MIXTURE OF A THERMOSETTING PHENOLFORMALDEHYDE RESIN WITH A MODIFYING AGENT SELECTED FROM THE GROUP CONSISTING OF NATURAL RESINS, ABIETIC ACID AND METHYL ABIETATE, TOGETHER WITH AN ACIDIFIED METAL PHOSPHATE AND PHOSPHORIC ACID, SAID METAL PHOSPHATE BEING ADAPTED TO REACT WITH A METAL SURFACE TO WHICH THE COMPOSITION IS APPLIED TO FORM AN INSOLUBLE PHOSPHATE LAYER THEREON AND ALSO TO ACT WITH SAID PHOSPHORIC ACID AS A THERMO-SETTING CATALYST DURING STOVING.
References Cited (Backward Citations)
US2186687A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |