US3241908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monomolecular film formers for water surfaces
Assignee: Individual
•
Filing: 1962-03-05
•
Granted: 1966-03-22
•
Expires: 1982-03-05
Abstract
No abstract record available.
Inventors
- 👤 Paul A Mazur
- 👤 Michel Curtis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:28
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
51 words
THE METHOD OF PRODUCING A FILM FORMER FOR CONTROLLING WATER EVAPORATION FROM WATER SURFACES COMPRISING HEATING A SOLID INSOLUBLE MONOMOLECULAR FILM-FORMING COMPOUND AT LEAST TO ITS MELTING POINT, INCORPORATING GAS INTO THE MELTED COMPOUND UNTIL IT IS IN THE FOAMED CONDITION, AND COOLING THE FOAMED COMPOUND TO THE SOLID FOAMED STATE.
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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |