US2784110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organophilic attapulgite and process of making same
Assignee: EIDP Inc
•
Filing: 1954-01-06
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Granted: 1957-03-05
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Expires: 1974-01-06
Abstract
No abstract record available.
Inventors
- 👤 William S Tatlock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:06
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C04B33/1305; C01; C01B; C01B33/00; C01B33/20; C01B33/36; C01B33/38; C01B33/44; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/298; Y10T428/2982; Y10T428/2991
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
IN A PROCESS FOR THE PREPARATION OF A DISPERSIBLE, ORGANOPHILIC ATTAPULGITE THE STEPS COMPRISING MIXING ATTAPULGITE WITH WATER WITH SUFFICIENT INTENSITY TO FIBRILLATE THE ATAPULGITE, WHEREBY AN AQUEOUS DISPERSION IS OBTAINED, REPLACING THE WATER IN THE DISPERSION WITH AN ORGANIC LIQUID WHICH IS AT LEAST PARTIALLY WATER-MISCIBLE, AND THEREAFTER EFFECTING CONTACT BETWEN THE FIBRILLATED ATTAPULGITE AND A HYDROLYZABLE ORGANOSILANE, WHEREBY THE ORGANOSILANE REACTS WITH SURFACE OF THE ATTAPULGITE TO MAKE IT ORGANOPHILIC.
Claim 2
Dependent Claim
72 words
IN A PROCESS FOR THE PREPARATION OF A DISPERSIBLE, ORGANOPHILIC ATTAPULGITE THE STEPS COMPRISING MIXING ATTAPULGITE WITH WATER WITH SUFFICIENT INTENSITY TO FIBRILLATE THE ATAPULGITE, WHEREBY AN AQUEOUS DISPERSION IS OBTAINED, REPLACING THE WATER IN THE DISPERSION WITH AN ORGANIC LIQUID WHICH IS AT LEAST PARTIALLY WATER-MISCIBLE, AND THEREAFTER EFFECTING CONTACT BETWEN THE FIBRILLATED ATTAPULGITE AND A HYDROLYZABLE ORGANOSILANE, WHEREBY THE ORGANOSILANE REACTS WITH SURFACE OF THE ATTAPULGITE TO MAKE IT ORGANOPHILIC.
References Cited (Backward Citations)
US2610167A
Cited
US2657149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-04 | 1960-09-03 | 1961-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-04 | 1964-09-03 | 1965-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-04 | 1968-09-03 | 1969-03-05 | $7700.00 | Window Closed / Lapsed |