Patent US2538092A successfully refreshed from Google Patents.
US3212909A
Expired / Lapsed
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Antifogging composition
Assignee: Individual
•
Filing: 1960-10-07
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Granted: 1965-10-19
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Expires: 1980-10-07
Abstract
No abstract record available.
Inventors
- 👤 Arthur B Leigh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:41
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A DEVICE FOR APPLYING ANTIFOGGING COMPOSITION TO A SMOOTH SURFACE CONSISTING ESSENTIALLY OF A FLEXIBLE POROUS SHEET OF FIBROUS MATERIAL IMPREGNATED WITH A COMPOSITION CONSISTING ESSENTIALLY OF A MEMBER OF THE CLASS CONSISTING OF SURFACE ACTIVE SULFATED AND SULFONATED FATTY MATERIALS IN ADMIXTURE WITH AN AMMONIUM SOAP OF A FATTY ACID HAVING FROM 16 TO 18 CARBON ATOMS, THE AMOUNT OF SAID SOAP RANGING FROM 3% TO 50% BY WEIGHT OF SAID FATTY MATERIALS.
Claim 2
Independent Claim
74 words
A DEVICE FOR APPLYING ANTIFOGGING COMPOSITION TO A SMOOTH SURFACE CONSISTING ESSENTIALLY OF A FLEXIBLE POROUS SHEET OF FIBROUS MATERIAL IMPREGNATED WITH A COMPOSITION CONSISTING ESSENTIALLY OF A MEMBER OF THE CLASS CONSISTING OF SURFACE ACTIVE SULFATED AND SULFONATED FATTY MATERIALS IN ADMIXTURE WITH AN AMMONIUM SOAP OF A FATTY ACID HAVING FROM 16 TO 18 CARBON ATOMS, THE AMOUNT OF SAID SOAP RANGING FROM 3% TO 50% BY WEIGHT OF SAID FATTY MATERIALS.
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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |