US2967153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid desiccant
Assignee: International Minerals and Chemical Corp
•
Filing: 1956-12-27
•
Granted: 1961-01-03
•
Expires: 1976-12-27
Abstract
No abstract record available.
Inventors
- 👤 Harry H Houston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:11
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/26; Y; Y10; Y10S; Y10S210/00; Y10S210/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A SUBSTANTIALLY ANHYDROUS LIGHT-WEIGHT SOLID DESICCANT SUITABLE FOR THE DRYING OF MOISTURE-CONTAINING GASES COMPRISED OF COMMINUTED PARTICLES OF EXPANDED PERLITE AND A HYGROSCOPIC MATERIAL DEPOSITED ON THE SURFACE AND ABSORBED IN THE PORES THEREOF.
Claim 2
Dependent Claim
34 words
A SUBSTANTIALLY ANHYDROUS LIGHT-WEIGHT SOLID DESICCANT SUITABLE FOR THE DRYING OF MOISTURE-CONTAINING GASES COMPRISED OF COMMINUTED PARTICLES OF EXPANDED PERLITE AND A HYGROSCOPIC MATERIAL DEPOSITED ON THE SURFACE AND ABSORBED IN THE PORES THEREOF.
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-03 | 1964-07-04 | 1965-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-03 | 1968-07-04 | 1969-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-03 | 1972-07-04 | 1973-01-03 | $7700.00 | Window Closed / Lapsed |