Patent US3143410A successfully refreshed from Google Patents.
US3143410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prevention of coalescence of hygroscopic granular material with colloidal clay
Assignee: Minerals and Chemicals Philipp Corp
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Filing: 1959-10-21
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Granted: 1964-08-04
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Expires: 1979-10-21
Abstract
No abstract record available.
Inventors
- 👤 Homer A Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:57
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/30; C; C05; C05C; C05C1/00; C05C1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A METHOD OF CONDITIONING HYGROSCOPIC GRANULAR MATERIAL TO PREVENT ITS COALESCENCE DUE TO HEAT, PRESSURE OR MOISTURE WHICH COMPRISES UNIFORMLY COATING SUCH GRANULAR MATERIAL WITH A SMALL QUANTITY OF A DISPERSION OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF COLLOIDAL ATTAPULGITE CLAY AND COLLOIDAL SEPIOLITE CLAY.
Claim 2
Independent Claim
47 words
A METHOD OF CONDITIONING HYGROSCOPIC GRANULAR MATERIAL TO PREVENT ITS COALESCENCE DUE TO HEAT, PRESSURE OR MOISTURE WHICH COMPRISES UNIFORMLY COATING SUCH GRANULAR MATERIAL WITH A SMALL QUANTITY OF A DISPERSION OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF COLLOIDAL ATTAPULGITE CLAY AND COLLOIDAL SEPIOLITE CLAY.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |