US3326174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for prevention of growth of aquatic fouling
Assignee: Charlton Weddle and Co Ltd
•
Filing: 1965-09-02
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Granted: 1967-06-20
•
Expires: 1985-09-02
Abstract
No abstract record available.
Inventors
- 👤 Czekanski Joseph
- 👤 Smith James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:16
CPC Classifications
B; B63; B63B; B63B59/00; B63B59/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A METHOD FOR PREVENTING OR DELAYING THE GROWTH OF MARINE FOULING ON THE SURFACES OF A SHIP HULL COMPRISING FORMING A FOAM OF FINE AIR OR GAS BUBBLES IN WATER CONTAINING A DISPERSED TOXIN AND EMITTING JETS OF SAID FOAM AT SPACED POSITIONS ALONG THE SHIP''S HULL.
Claim 2
Independent Claim
47 words
A METHOD FOR PREVENTING OR DELAYING THE GROWTH OF MARINE FOULING ON THE SURFACES OF A SHIP HULL COMPRISING FORMING A FOAM OF FINE AIR OR GAS BUBBLES IN WATER CONTAINING A DISPERSED TOXIN AND EMITTING JETS OF SAID FOAM AT SPACED POSITIONS ALONG THE SHIP''S HULL.
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) | 1970-06-19 | 1970-12-19 | 1971-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-19 | 1974-12-19 | 1975-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-19 | 1978-12-19 | 1979-06-20 | $7700.00 | Window Closed / Lapsed |