US2967154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carrier supported desiccant
Assignee: International Minerals and Chemical Corp
•
Filing: 1957-07-01
•
Granted: 1961-01-03
•
Expires: 1977-07-01
Abstract
No abstract record available.
Inventors
- 👤 Henry P Beerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:39
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A DESICCANT COMPRISING A POROUS CARRIER AND A HYGROSCOPIC MATERIAL ON THE SURFACE OF SAID CARRIER, THERE BEING PRESENT IN SAID DESICCANT FROM BOUT ONE TO ABOUT NINETEEN PARTS BY WEIGHT OF SAID CARRIER PER PART BY WEIGHT OF SAID HYGROSCOPIC MATERIAL, SAID POROUS CARRIER CONSISTING ESSENTIALLY OF A FIRED BODY FORMED FROM A MIXTURE OF CLAY AND PARTICULATE EXPANDED PERLITE, THERE BEING PRESENT IN SAID BODY FROM ABOUT TWO TO ABOUT NINETEEN PARTS BY WEIGHT OF SAID PARTICULATE PERLITE PER PART BY WEIGHT OF SAID CLAY.
Claim 2
Dependent Claim
87 words
A DESICCANT COMPRISING A POROUS CARRIER AND A HYGROSCOPIC MATERIAL ON THE SURFACE OF SAID CARRIER, THERE BEING PRESENT IN SAID DESICCANT FROM BOUT ONE TO ABOUT NINETEEN PARTS BY WEIGHT OF SAID CARRIER PER PART BY WEIGHT OF SAID HYGROSCOPIC MATERIAL, SAID POROUS CARRIER CONSISTING ESSENTIALLY OF A FIRED BODY FORMED FROM A MIXTURE OF CLAY AND PARTICULATE EXPANDED PERLITE, THERE BEING PRESENT IN SAID BODY FROM ABOUT TWO TO ABOUT NINETEEN PARTS BY WEIGHT OF SAID PARTICULATE PERLITE PER PART BY WEIGHT OF SAID 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) | 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 |