US2970070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated metal articles
Assignee: Dow Chemical Co
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Filing: 1958-04-25
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Granted: 1961-01-31
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Expires: 1978-04-25
Abstract
No abstract record available.
Inventors
- 👤 Sherman C Lashua
- 👤 Jr William K Schweitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:15
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; C; C09; C09D; C09D125/00; C09D125/02; C09D125/04; C09D125/08; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/268; Y10T428/269; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
A METHOD FOR PROTECTIVELY COATING A METAL SURFACE WHICH COMPRISES APPLYING TO THE SURFACE A SOLUTION OF A THERMOPLASTIC RESINOUS COPOLYMER HAVING AN AVERAGE MOLECULAR WEIGHT IN THE RANGE FROM ABOUT 150,000 TO ABOUT 500,000 AND CONSISTING ESSENTIALLY OF (A) FROM ABOUT 80 TO 99 WEIGHT PERCENT, BASED ON THE WEIGHT OF THE COPOLYMER, OF A MONOALKENYL AROMATIC MONOMER OF THE FORMULA: CH2=CRAR, WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND METHYL AND AR IS AN AROMATIC RADICAL OF THE BENZENE SERIES CONTAINING FROM 6 TO ABOUT 10 CARBON ATOMS, AND (B) FROM ABOUT 20 TO 1 WEIGHT PERCENT, BASED ON THE WEIGHT OF THE COPOLYMER, OF A MONOMERIC CARBOXYLIC HYDROCARBON OLEFIN OF THE FORMULA: H2C=CG-COOH, WHEREIN G IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, METHYL, NITRILE, AND HALOGENS OF ATOMIC NUMBER FROM 9 TO 35; THEN DRYING THE FROM SAID APPLIED SOLUTION TO DEPOSIT A CONTINUOUS COATING LAYER OF SAID RESINOUS COPOLYMER ON SAID METAL SURFACE.
Claim 2
Independent Claim
161 words
A METHOD FOR PROTECTIVELY COATING A METAL SURFACE WHICH COMPRISES APPLYING TO THE SURFACE A SOLUTION OF A THERMOPLASTIC RESINOUS COPOLYMER HAVING AN AVERAGE MOLECULAR WEIGHT IN THE RANGE FROM ABOUT 150,000 TO ABOUT 500,000 AND CONSISTING ESSENTIALLY OF (A) FROM ABOUT 80 TO 99 WEIGHT PERCENT, BASED ON THE WEIGHT OF THE COPOLYMER, OF A MONOALKENYL AROMATIC MONOMER OF THE FORMULA: CH2=CRAR, WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND METHYL AND AR IS AN AROMATIC RADICAL OF THE BENZENE SERIES CONTAINING FROM 6 TO ABOUT 10 CARBON ATOMS, AND (B) FROM ABOUT 20 TO 1 WEIGHT PERCENT, BASED ON THE WEIGHT OF THE COPOLYMER, OF A MONOMERIC CARBOXYLIC HYDROCARBON OLEFIN OF THE FORMULA: H2C=CG-COOH, WHEREIN G IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, METHYL, NITRILE, AND HALOGENS OF ATOMIC NUMBER FROM 9 TO 35; THEN DRYING THE FROM SAID APPLIED SOLUTION TO DEPOSIT A CONTINUOUS COATING LAYER OF SAID RESINOUS COPOLYMER ON SAID METAL SURFACE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |