Patent US3615744A successfully refreshed from Google Patents.
US3615744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antifouling paints
Assignee: Takeda Pharmaceutical Co Ltd
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Filing: 1968-07-03
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Granted: 1971-10-26
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Expires: 1988-07-03
Abstract
Abstract An antifouling paint, useful interalia in preventing marine growth on ship bottoms, hulls, nets, piles, etc., contains a synergistic combination of 2-amino-3-chloro-1,4-naphthoquinone, a copper compound (e.g. a basic copper sulfate) and an organic tin compound (tributyl tin fumarate, tributyl tin fluoride) in a suitable vehicle.
Inventors
- 👤 Makoto Yokoo
- 👤 Junji Ogura
- 👤 Hiroshi Ikeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:59
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/16
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
37 words
An improvement according to claim 1, wherein the total weight of the 2-amino-3-chloro-1,4-naphthoquinone, copper compound and organic tin compound falls within the range of 5 to 30 weight % relative to the total weight of the paint.
Claim 2
Dependent Claim
15 words
An improvement according to claim 1, wherein the tributyl tin carboxylate is tributyl tin fumarate.
Claim 3
Dependent Claim
15 words
An improvement according to claim 1, wherein the tributyl tin halide is tributyl tin fluoride.
Claim 4
Dependent Claim
47 words
An improvement according to claim 1, wherein the vehicle comprises a mixture of solvents, rosin and a resin selected from the group consisting of polyvinyl chloride, polyacrylic ester, polyacrylic acid, acrylic acid ester-vinyl chloride copolymer, acrylic acid ester-vinyl acetate copolymer, vinyl chloride-vinyl acetate copolymer and chlorinated rubber.
Claim 5
Dependent Claim
28 words
An improvement according to claim 5, wherein the amount of resin is within the range of 5 to 20 weight % of the total amount of the paint.
Claim 6
Dependent Claim
24 words
An improvement according to claim 5, wherein the amount of rosin is 5 to 20 weight % of the total amount of the paint.
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) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |