US3765932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for anti-corrosive coating
Assignee: Kureha Corp
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Filing: 1972-03-24
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Granted: 1973-10-16
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Expires: 1992-03-24
Abstract
Abstract Anti-corrosion coating method, wherein a composition prepared by mixing a vinylidene fluoride resin and a tetrafluoroethylene resin at an appropriate mixing proportion and a mixture of low and high boiling point solvents is used as the coating material.
Inventors
- 👤 T Kokubo
- 👤 I Shimokuma
- 👤 M Segawa
- 👤 H Takahashi
- 👤 K Hirano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:27
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; C; C09; C09D; C09D127/00; C09D127/02; C09D127/12; C09D127/16; C08; C08L; C08L27/00; C08L27/02; C08L27/12; C08L27/18
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
35 words
The method according to claim 1, wherein said low boiling point solvent possesses a boiling point range of from 100* to 200*C, and is selected from the group consisting of gamma -butyrolactone and diacetone alcohol.
Claim 2
Dependent Claim
35 words
The method according to claim 1, wherein said high boiling point solvent possesses a boiling point range of from 150* to 350*C, and is selected from the group consisting of dimethyl phthalate and diethyl phthalate.
Claim 3
Dependent Claim
21 words
The method according to claim 1, wherein the solvents are present in an amount of 250 to 750 parts by weight.
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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) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |