Patent US3856743A successfully refreshed from Google Patents.
US3856743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-fouling polyester resin
Assignee: Individual
•
Filing: 1973-06-05
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Granted: 1974-12-24
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Expires: 1993-06-05
Abstract
Abstract A non-corrosive anti-fouling polymerisable composition for coating or forming a structure to be immersed in water and subject to infestation of aquatic flora and fauna characterized in that it comprises a polyester resin based upon isophthalic, orthophthalic, tetrahydrophthalic or terephthalic acid and up to 25% by weight based on resin content of a toxic agent which is a cupric, mercuric or stannic compound or a mixture thereof, and optionally sufficient colloidal silica to produce a gel.
Inventors
- 👤 G Balsacq
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:58
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/16; C09D5/1656; C09D5/1662; C08; C08K; C08K3/00; C08K3/01; C08K3/015
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
95 words
A COMPOSITION FOR USE IN COATING AND FORMING ARITCLES TO BE PROTECTED FROM INFESTATION BY AQUATIC FLORA AND FAUNA CONSISTING ESSENTIALLY OF AT LEAST ONE POLYMERIZABLE POLYESTER RESIN DERIVED FROM PHTHALIC ACID, SAID PHTHALIC ACID BEING SELECTED FROM THE GROUP CONSISTING OF ISOPHTHALIC ACID, ORTHOPHTHALIC ACID, TETRAHYDROPHTHALIC ACID, TEREPHTHALIC ACID AND MIXTURES THEREOF; AT LEAST ONE MEMBER OF THE ROUP CONSISTING OF CUPRRIC MERCURIC AND STANNIC SALTS IN A FINELY DIVIDED PHYSICAL STATE IN AN AMOUNT OF FROM 15% TO 25% BY WEIGHT, BASED ON THE RESIN CONTENT AND A GELLING AMOUNT OF COLLOIDAL SILICA.
Claim 2
Dependent Claim
95 words
A COMPOSITION FOR USE IN COATING AND FORMING ARITCLES TO BE PROTECTED FROM INFESTATION BY AQUATIC FLORA AND FAUNA CONSISTING ESSENTIALLY OF AT LEAST ONE POLYMERIZABLE POLYESTER RESIN DERIVED FROM PHTHALIC ACID, SAID PHTHALIC ACID BEING SELECTED FROM THE GROUP CONSISTING OF ISOPHTHALIC ACID, ORTHOPHTHALIC ACID, TETRAHYDROPHTHALIC ACID, TEREPHTHALIC ACID AND MIXTURES THEREOF; AT LEAST ONE MEMBER OF THE ROUP CONSISTING OF CUPRRIC MERCURIC AND STANNIC SALTS IN A FINELY DIVIDED PHYSICAL STATE IN AN AMOUNT OF FROM 15% TO 25% BY WEIGHT, BASED ON THE RESIN CONTENT AND A GELLING AMOUNT OF COLLOIDAL SILICA.
Claim 3
Dependent Claim
30 words
A composition as claimed in claim 1 in which the cupric salt is selected from the group consisting of cupric sulphate, cupric carbonate, cupric formate, cupric thiocyanate and copper aceto-arsenate.
Claim 4
Dependent Claim
15 words
A composition according to claim 1 wherein the polyester resin is derived from isophthalic acid.
Claim 5
Dependent Claim
15 words
A composition according to claim 1 wherein the polyester resin is derived from orthophthalic acid.
Claim 6
Dependent Claim
14 words
A composition according to claim 1 in which the salt is a cupric salt.
Claim 7
Dependent Claim
14 words
A composition according to claim 1 in which the salt is a mercuric salt.
References Cited (Backward Citations)
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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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |