US2845344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for purifying mercury
Assignee: Olin Corp
•
Filing: 1954-10-26
•
Granted: 1958-07-29
•
Expires: 1974-10-26
Abstract
No abstract record available.
Inventors
- 👤 Walter J Sakowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:36
CPC Classifications
C; C22; C22C; C22C3/00; C22C3/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A PROCESS FOR PURIFYING MERCURY CONTAINING ALLOYING METAL IMPURITIES, WHICH METAL IMPURITIES ARE NOT EFFECTIVELY REMOVED BY TREATMENT WITH DILUTE AQUEOUS MINERAL ACIDS ALONE, WHICH COMPRISES AGITATING THE MERCURY IN CONTACT WITH AN AQUEOUS ACID SOLUTION OF A MINERAL ACID AND AN AMMONIUM SALT OF A MINERAL ACID, IN WHICH SOLUTION THE MINERAL ACID AND THE AMMONIUM SALT ARE EACH PRESENT IN AN AMOUNT OF AT LEAST ABOUT 1% BY WEIGHT, WHEREBY METAL IMPURITIES CONTAINED IN THE MERCURY ARE REMOVED IN THE AQUEOUS SOLUTION.
Claim 2
Dependent Claim
84 words
A PROCESS FOR PURIFYING MERCURY CONTAINING ALLOYING METAL IMPURITIES, WHICH METAL IMPURITIES ARE NOT EFFECTIVELY REMOVED BY TREATMENT WITH DILUTE AQUEOUS MINERAL ACIDS ALONE, WHICH COMPRISES AGITATING THE MERCURY IN CONTACT WITH AN AQUEOUS ACID SOLUTION OF A MINERAL ACID AND AN AMMONIUM SALT OF A MINERAL ACID, IN WHICH SOLUTION THE MINERAL ACID AND THE AMMONIUM SALT ARE EACH PRESENT IN AN AMOUNT OF AT LEAST ABOUT 1% BY WEIGHT, WHEREBY METAL IMPURITIES CONTAINED IN THE MERCURY ARE REMOVED IN THE AQUEOUS SOLUTION.
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) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |