Patent US3146252A successfully refreshed from Google Patents.
US3146252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic silicates
Assignee: PQ Corp
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Filing: 1961-08-21
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Granted: 1964-08-25
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Expires: 1981-08-21
Abstract
No abstract record available.
Inventors
- 👤 Emblem Harold Garton
- 👤 Fothergill Earl Whiteway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:21
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/205; C; C04; C04B; C04B28/00; C04B28/24; C07; C07F; C07F7/00; C07F7/02; C07F7/04; C08; C08G; C08G77/00; C08G77/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A PROCESS FOR PREPARING AN ORGANIC SILICATE HYDROLYSATE COMPRISING MAKING A MIXTURE OF A FIRST SILICATE, WATER AND AN ACID AS HYDROLYSIS ACCELERATOR, ALLOWING THE HYDROLYSIS OF THE FIRST SILICATE TO PROCEED, AND SUBSEQUENTLY ADDING TO THIS MIXTURE QUANTITY OF A SECOND SILICATE, SAID FIRST AND SECOND SILICATES BEING SELECTED FROM THE GROUP CONSISTING OF ETHYL SILICATE AND ISOPROPYL SILICATE AND AT LEAST ONE OF SAID SILICATES IS AN ISOPROPYL SILICATE.
Claim 2
Dependent Claim
71 words
A PROCESS FOR PREPARING AN ORGANIC SILICATE HYDROLYSATE COMPRISING MAKING A MIXTURE OF A FIRST SILICATE, WATER AND AN ACID AS HYDROLYSIS ACCELERATOR, ALLOWING THE HYDROLYSIS OF THE FIRST SILICATE TO PROCEED, AND SUBSEQUENTLY ADDING TO THIS MIXTURE QUANTITY OF A SECOND SILICATE, SAID FIRST AND SECOND SILICATES BEING SELECTED FROM THE GROUP CONSISTING OF ETHYL SILICATE AND ISOPROPYL SILICATE AND AT LEAST ONE OF SAID SILICATES IS AN ISOPROPYL SILICATE.
References Cited (Backward Citations)
US2640031A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |