US2951812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desiccant and method of making
Assignee: General Welding and Fabricating Co
•
Filing: 1958-08-11
•
Granted: 1960-09-06
•
Expires: 1978-08-11
Abstract
No abstract record available.
Inventors
- 👤 Vincent Q Rapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:19
CPC Classifications
B; B01; B01J; B01J20/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A DESICCANT COMPOSITION FORMED BY MIXING 100 PARTS BY WEIGHT OF GRANULAR UREA WITH FROM 0.5 TO 5 PARTS BY WEIGHT OF POWDERED SODIUM DICHROMATE AND THEN WITH FROM 1 TO 5 PARTS BY WEIGHT OF CALCIUM CHLORIDE IN THE FORM OF A WATER SOLUTION THEREOF HAVING A CONCENTRATION OF AT LEAST 25%.
Claim 2
Dependent Claim
53 words
A DESICCANT COMPOSITION FORMED BY MIXING 100 PARTS BY WEIGHT OF GRANULAR UREA WITH FROM 0.5 TO 5 PARTS BY WEIGHT OF POWDERED SODIUM DICHROMATE AND THEN WITH FROM 1 TO 5 PARTS BY WEIGHT OF CALCIUM CHLORIDE IN THE FORM OF A WATER SOLUTION THEREOF HAVING A CONCENTRATION OF AT LEAST 25%.
References Cited (Backward Citations)
DE259574C
Cited
US1041608A
Cited
US1425790A
Cited
US1482626A
Cited
US1740351A
Cited
GB280934A
Cited
US1798862A
Cited
US2686741A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |