US2920051A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Whetlerite product and process
Assignee: Individual
•
Filing: 1944-01-22
•
Granted: 1960-01-05
•
Expires: 1964-01-22
Abstract
No abstract record available.
Inventors
- 👤 Edwin O Wiig
- 👤 Norman L Morse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:35
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A PROCESS FOR PREPARING AN ABSORBENT MATERIAL WHICH CONSISTS IN IMPREGNATING A BASE CHARCOAL WITH A SOLUTION CONSISTING ESSENTIALLY OF WATER AND BASIC COPPER CARBONATE, AMMONIA, AMMONIUM CARBONATE, SILVER NITRATE, TARTARIC ACID, AND AMMONIUM MOLYBDATE DISSOLVED IN SAID WATER, SAID SOLUTION HAVING THE FOLLOWING APPROXIMATE COMPOSITION.
Claim 2
Dependent Claim
46 words
A PROCESS FOR PREPARING AN ABSORBENT MATERIAL WHICH CONSISTS IN IMPREGNATING A BASE CHARCOAL WITH A SOLUTION CONSISTING ESSENTIALLY OF WATER AND BASIC COPPER CARBONATE, AMMONIA, AMMONIUM CARBONATE, SILVER NITRATE, TARTARIC ACID, AND AMMONIUM MOLYBDATE DISSOLVED IN SAID WATER, SAID SOLUTION HAVING THE FOLLOWING APPROXIMATE COMPOSITION.
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) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |