Patent US4234340A successfully refreshed from Google Patents.
US4234340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antifouling marine coating composition containing agar, a plasticizer and a strengthening agent
Assignee: Individual
•
Filing: 1979-05-11
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Granted: 1980-11-18
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Expires: 1999-05-11
Abstract
Abstract A high strength, non-toxic, antifouling, marine coating composition is provided which comprises agar, a water soluble polyol plasticizer such as dipropylene glycol, a strengthening agent as, for example, potassium borate, and water.
Inventors
- 👤 Michael A. Pellico
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:57
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/16; Y; Y02; Y02T; Y02T70/00; Y02T70/10
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
69 words
A marine coating composition comprising from about 8 to about 15 wt.% agar. from about 10 to about 40 wt.% of a polyol plasticizer having at least three carbon atoms and at least two hydroxyl groups, from about 0.2 to about 2 wt.% of a strengthening agent selected from the group consisting of sodium borate, potassium borate, calcium sulfate, zinc sulfate and mixtures thereof, and water to 100 wt.%.
Claim 2
Dependent Claim
69 words
A marine coating composition comprising from about 8 to about 15 wt.% agar. from about 10 to about 40 wt.% of a polyol plasticizer having at least three carbon atoms and at least two hydroxyl groups, from about 0.2 to about 2 wt.% of a strengthening agent selected from the group consisting of sodium borate, potassium borate, calcium sulfate, zinc sulfate and mixtures thereof, and water to 100 wt.%.
Claim 3
Dependent Claim
18 words
The composition of claim 1 wherein the concentration of agar is from about 10 to about 12 wt.%.
Claim 4
Dependent Claim
19 words
The composition of claim 1 wherein the concentration of polyol plasticizer is from about 15 to about 30 wt.%.
Claim 5
Dependent Claim
31 words
The composition of claim 1 wherein the polyol plasticizer is a member selected from the group consisting of propylene glycol, glycerol, pentaerythritol, hexamethylene glycol, diethylene glycol, dipropylene glycol and mixtures thereof.
Claim 6
Dependent Claim
20 words
The composition of claim 1 wherein the concentration of the strengthening agent is from about 0.5 to about 1 wt.%.
Claim 7
Dependent Claim
71 words
A watercraft having an adherent coating comprising from about 8 to about 15 wt.% agar, from about 10 to about 40 wt.% of a polyol plasticizer having at least three carbon atoms and at least two hydroxyl groups, from about 0.2 to about 2 wt.% of a strengthening agent selected from the group consisting of sodium borate, potassium borate, calcium sulfate, zinc sulfate and mixtures thereof, and water to 100 wt.%.
Claim 8
Dependent Claim
71 words
A watercraft having an adherent coating comprising from about 8 to about 15 wt.% agar, from about 10 to about 40 wt.% of a polyol plasticizer having at least three carbon atoms and at least two hydroxyl groups, from about 0.2 to about 2 wt.% of a strengthening agent selected from the group consisting of sodium borate, potassium borate, calcium sulfate, zinc sulfate and mixtures thereof, and water to 100 wt.%.
Claim 9
Dependent Claim
18 words
The watercraft of claim 6 wherein the concentration of agar is from about 10 to about 12 wt.%.
Claim 10
Dependent Claim
19 words
The watercraft of claim 6 wherein the concentration of polyol plasticizer is from about 15 to about 30 wt.%.
Claim 11
Dependent Claim
31 words
The watercraft of claim 6 wherein the polyol plasticizer is a member selected from the group consisting of propylene glycol, glycerol, pentaerythritol, hexamethylene glycol, diethylene glycol, dipropylene glycol and mixtures thereof.
Claim 12
Dependent Claim
20 words
The watercraft of claim 6 wherein the concentration of the strengthening agent is from about 0.5 to about 1 wt.%.
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) | 1983-11-18 | 1984-05-19 | 1984-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-18 | 1988-05-19 | 1988-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-18 | 1992-05-19 | 1992-11-18 | $7700.00 | Window Closed / Lapsed |