US4552813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of inhibiting the growth of marine life on surfaces in contact with seawater
Assignee: Individual
•
Filing: 1983-09-21
•
Granted: 1985-11-12
•
Expires: 2003-09-21
Abstract
Abstract An antifouling coating for inhibiting the growth of marine life on surfaces in contact with seawater comprising a coating material having dispersed therein an effective amount of particles of a polycyclic naphthacenecarboxamide, preferably tetracycline. The principle use of composition of this invention is to coat the hulls of boats and ships and other surfaces contacted by seawater.
Inventors
- 👤 Ralph R. Grams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:30
CPC Classifications
A; A01; A01N; A01N37/00; A01N37/18; A01N37/44; C; C09; C09D; C09D5/00; C09D5/16; C09D5/1606; C09D5/1612; C09D5/1625; Y; Y10; Y10S; Y10S428/00; Y10S428/907; Y10T; Y10T428/00; Y10T428/31504
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
51 words
A method for inhibiting the growth of marine life on surfaces in contact with seawater comprising covering that surface with a suitable coating for seawater applications in which is dispersed an effective amount of particles of a polycyclic naphthacenecarboxamide available at the outer surface of the coating for contact by seawater.
Claim 2
Independent Claim
51 words
A method for inhibiting the growth of marine life on surfaces in contact with seawater comprising covering that surface with a suitable coating for seawater applications in which is dispersed an effective amount of particles of a polycyclic naphthacenecarboxamide available at the outer surface of the coating for contact by seawater.
Claim 3
Dependent Claim
10 words
The method of claim 1 wherein said coating is paint.
Claim 4
Dependent Claim
11 words
The method of claim 1 wherein said polycyclic napthacenecarboxamide is tetracycline.
Claim 5
Dependent Claim
20 words
The method of claim 1 wherein said effective amount is at least 250 mg. of particles per quart of coating.
Claim 6
Dependent Claim
16 words
The method of claim 1 wherein said particles are smaller than about 0.005 inch in diameter.
Claim 7
Dependent Claim
18 words
The method of claim 5 wherein said particles are from about 0.001 to about 0.004 inch in diameter.
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) | 1988-11-11 | 1989-05-13 | 1989-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-11 | 1993-05-13 | 1993-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-11 | 1997-05-13 | 1997-11-12 | $7700.00 | Window Closed / Lapsed |