US2521949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of mercuric oxide
Assignee: Precision Chemical Corp
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Filing: 1948-03-09
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Granted: 1950-09-12
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Expires: 1968-03-09
Abstract
No abstract record available.
Inventors
- 👤 Clarence W Roen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:23
CPC Classifications
C; C01; C01G; C01G13/00; C01G13/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
THE METHOD OF MAKING SUBSTANTIALLY GRANULAR MERCURIC OXIDE WHICH COMPRISES REACTING A MIXTURE OF ELEMENTAL MERCURY AND NITRIC ACID IN A VESSEL ROTATABLE ABOUT A SUBSTANTIALLY HORIZONTAL AXIS, ROTATING THE VESSEL DURING THE COURSE OF SAID REATION WITH THE RESULTING PRODUCTION OF MERCUROUS NITRATE IN THE FORM OF A COATING THEREOF ON THE INTERIOR SURFACE OF THE VESSEL, AND SUBSEQUENTLY HEATING THE ROTATING VESSEL TO A TEMPERATURE SUFFICIENTLY HIGH TO EFFECT DECOMPOSITION OF THE MERCUROUS NITRATE WHILE IN SITU IN SAID COATING WITH THE RESULTING PRODUCTION OF SUBSTANTIALLY GRANULAR MERCURIC OXIDE.
Claim 2
Independent Claim
91 words
THE METHOD OF MAKING SUBSTANTIALLY GRANULAR MERCURIC OXIDE WHICH COMPRISES REACTING A MIXTURE OF ELEMENTAL MERCURY AND NITRIC ACID IN A VESSEL ROTATABLE ABOUT A SUBSTANTIALLY HORIZONTAL AXIS, ROTATING THE VESSEL DURING THE COURSE OF SAID REATION WITH THE RESULTING PRODUCTION OF MERCUROUS NITRATE IN THE FORM OF A COATING THEREOF ON THE INTERIOR SURFACE OF THE VESSEL, AND SUBSEQUENTLY HEATING THE ROTATING VESSEL TO A TEMPERATURE SUFFICIENTLY HIGH TO EFFECT DECOMPOSITION OF THE MERCUROUS NITRATE WHILE IN SITU IN SAID COATING WITH THE RESULTING PRODUCTION OF SUBSTANTIALLY GRANULAR MERCURIC OXIDE.
References Cited (Backward Citations)
US1397076A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-11 | 1954-03-13 | 1954-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-11 | 1958-03-13 | 1958-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-11 | 1962-03-13 | 1962-09-12 | $7700.00 | Window Closed / Lapsed |