Patent US2689166A successfully refreshed from Google Patents.
US2689166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hygroscopic water-soluble solid bodies made water-resistant and process therefor
Assignee: Ellis Foster Co
•
Filing: 1945-11-05
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Granted: 1954-09-14
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Expires: 1965-11-05
Abstract
No abstract record available.
Inventors
- 👤 John B Rust
- 👤 Spialter Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:31
CPC Classifications
C; C01; C01D; C01D3/00; C01D3/26; B; B01; B01J; B01J2/00; B01J2/30
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
38 words
AN ARTICLE OF MANUFACTURE COMPRISING SODIUM CHLORIDE TREATED WITH SILICOCHLOROFORM UNREACTIVE WITH SAID SUBSTANCE AND IN FLUID FORM TO REDUCE ITS HYGROSCOPICITY THE TREATED SUBSTANCE SHOWING NO PERCEPTIBLE CHANGE OTHER THAN IN RESPECT TO ITS WATER REPELLENT PROPERTIES.
Claim 2
Dependent Claim
38 words
AN ARTICLE OF MANUFACTURE COMPRISING SODIUM CHLORIDE TREATED WITH SILICOCHLOROFORM UNREACTIVE WITH SAID SUBSTANCE AND IN FLUID FORM TO REDUCE ITS HYGROSCOPICITY THE TREATED SUBSTANCE SHOWING NO PERCEPTIBLE CHANGE OTHER THAN IN RESPECT TO ITS WATER REPELLENT PROPERTIES.
Claim 3
Dependent Claim
51 words
AN ARTICLE OF MANUFACTURE COMPRISING A HYGROSCOPIC WATER-SOLUBLE SOLID BODY TREATED WITH AN INORGANIC SILICON HALIDE HAVING AN SI-H BOND SAID HALIDE BEING UNREACTIVE WITH SAID BODY AND IN FLUID FORM TO REDUCE ITS HYGROSCOPICITY THE TREATED SUBSTANCE SHOWING NO PERCEPTIBLE CHANGE OTHER THAN IN RESPECT TO ITS WATER REPELLENT PROPERTIES.
Claim 4
Dependent Claim
51 words
AN ARTICLE OF MANUFACTURE COMPRISING A HYGROSCOPIC WATER-SOLUBLE SOLID BODY TREATED WITH AN INORGANIC SILICON HALIDE HAVING AN SI-H BOND SAID HALIDE BEING UNREACTIVE WITH SAID BODY AND IN FLUID FORM TO REDUCE ITS HYGROSCOPICITY THE TREATED SUBSTANCE SHOWING NO PERCEPTIBLE CHANGE OTHER THAN IN RESPECT TO ITS WATER REPELLENT PROPERTIES.
References Cited (Backward Citations)
US1310037A
Cited
US2439689A
Cited
CH72202A
Cited
US1793420A
Cited
US1944825A
Cited
US1932434A
Cited
US1935575A
Cited
US2272342A
Cited
US2104488A
Cited
US2265962A
Cited
US2234484A
Cited
US2258218A
Cited
US2306222A
Cited
US2286763A
Cited
US2413491A
Cited
US2418935A
Cited
US2469625A
Cited
US2510661A
Cited
US2507200A
Cited
US2502286A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-13 | 1958-03-15 | 1958-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-13 | 1962-03-15 | 1962-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-13 | 1966-03-15 | 1966-09-14 | $7700.00 | Window Closed / Lapsed |