Patent US4970237A successfully refreshed from Google Patents.
Patent US3049449A successfully refreshed from Google Patents.
US3049449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lightweight adsorbent clay product and method of making same
Assignee: Minerals and Chemicals Philipp Corp
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Filing: 1960-03-29
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Granted: 1962-08-14
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Expires: 1980-03-29
Abstract
No abstract record available.
Inventors
- 👤 Aldo P Allegrini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:00
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A NOVEL ADSORBENT COMPRISING AGGREGATES OF A CLAY SELECTED FROM THE GROUP CONSISTING OF HYDROUS ATTAPULGITE CLAY AND HYDROUS SEPIOLITE CALY, WHICH CLAY HAD BEEN COLLOIDALLY DISPERSED IN WATER IN THE PRESENCE OF A DEFLOCCULATING AGENT, SAID AGGREGATES BEING FURTHER CHARACTERIZED BY BEING IN THE FORM OF MICROSCOPIC FIBERS AND HAVING A TAMPED BULK DENSITY OF 6 TO 10 POUNDS PER CUBIC FOOT.
Claim 2
Dependent Claim
63 words
A NOVEL ADSORBENT COMPRISING AGGREGATES OF A CLAY SELECTED FROM THE GROUP CONSISTING OF HYDROUS ATTAPULGITE CLAY AND HYDROUS SEPIOLITE CALY, WHICH CLAY HAD BEEN COLLOIDALLY DISPERSED IN WATER IN THE PRESENCE OF A DEFLOCCULATING AGENT, SAID AGGREGATES BEING FURTHER CHARACTERIZED BY BEING IN THE FORM OF MICROSCOPIC FIBERS AND HAVING A TAMPED BULK DENSITY OF 6 TO 10 POUNDS PER CUBIC FOOT.
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) | 1965-08-13 | 1966-02-12 | 1966-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-13 | 1970-02-12 | 1970-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-13 | 1974-02-12 | 1974-08-14 | $7700.00 | Window Closed / Lapsed |