US2788280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water repellent materials and process of producing the same
Assignee: Ellis Foster Co
•
Filing: 1950-06-27
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Granted: 1957-04-09
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Expires: 1970-06-27
Abstract
No abstract record available.
Inventors
- 👤 John B Rust
- 👤 Spialter Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:15
CPC Classifications
C; C04; C04B; C04B20/00; C04B20/10; C04B20/1051; A; A21; A21D; A21D2/00; A21D2/08; A23; A23L; A23L27/00; A23L27/40; B; B01; B01J; B01J2/00; B01J2/30; B01J37/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A HYDROSCOPIC SUBSTANCE NORMALLY WATER NON-REPELLENT IN PARTICULATE CONDITION TREATED WITH AN ORGANO SILICON HALIDE UNREACTIVE WITH SAID SUBSTANCE AND IN FLUID FORM THE ORGANO RADICL BEING A MONOVALENT HYDROCARBON TO REDUCE ITS HYGROSCOPICITY SUBSTANTIALLY, THE TREATED SUBSTANCE SHOWING NO PRECEPTIBLE CHANGE OTHER THAN IN RESPECT TO ITS WATER REPELLENT PROPERTIES.
Claim 2
Dependent Claim
51 words
A HYDROSCOPIC SUBSTANCE NORMALLY WATER NON-REPELLENT IN PARTICULATE CONDITION TREATED WITH AN ORGANO SILICON HALIDE UNREACTIVE WITH SAID SUBSTANCE AND IN FLUID FORM THE ORGANO RADICL BEING A MONOVALENT HYDROCARBON TO REDUCE ITS HYGROSCOPICITY SUBSTANTIALLY, THE TREATED SUBSTANCE SHOWING NO PRECEPTIBLE CHANGE OTHER THAN IN RESPECT TO ITS WATER REPELLENT PROPERTIES.
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) | 1960-04-08 | 1960-10-08 | 1961-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-08 | 1964-10-08 | 1965-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-08 | 1968-10-08 | 1969-04-09 | $7700.00 | Window Closed / Lapsed |