US2493551A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of normal lead dinitroresorcinate
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1947-07-08
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Granted: 1950-01-03
•
Expires: 1967-07-08
Abstract
No abstract record available.
Inventors
- 👤 Rubenstein Leon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:37
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/003; C07C; C07C201/00; C07C201/06; C07C201/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PROCESS FOR THE PRODUCTION OF NORMAL LEAD 2:4 DINITRORESORCINATE WHICH COMPRISES MIXING TOGETHER AT A TEMPERATURE NOT LOWER THAN 60*C. AN AQUEOUS SOLUTION OF NORMAL LEAD ACETATE WITH AN AQUEOUS SOLUTION CONTAINING A MAGNESIUM SALT OF 2:4 DINITRORESORCINOL HAVING ABOUT 1/2 TO 3/4 THE QUANTITY OF MAGNESIUM PRESENT IN THE NORMAL MAGNESIUM SALT, THE SAID LEAD ACETATE AND MAGNESIUM SALT BEING ADMIXED IN STOICHIOMETRICAL EQUIVALENT WEIGHTS.
Claim 2
Dependent Claim
67 words
A PROCESS FOR THE PRODUCTION OF NORMAL LEAD 2:4 DINITRORESORCINATE WHICH COMPRISES MIXING TOGETHER AT A TEMPERATURE NOT LOWER THAN 60*C. AN AQUEOUS SOLUTION OF NORMAL LEAD ACETATE WITH AN AQUEOUS SOLUTION CONTAINING A MAGNESIUM SALT OF 2:4 DINITRORESORCINOL HAVING ABOUT 1/2 TO 3/4 THE QUANTITY OF MAGNESIUM PRESENT IN THE NORMAL MAGNESIUM SALT, THE SAID LEAD ACETATE AND MAGNESIUM SALT BEING ADMIXED IN STOICHIOMETRICAL EQUIVALENT WEIGHTS.
References Cited (Backward Citations)
US1999728A
Cited
US2116514A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-02 | 1953-07-04 | 1954-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-02 | 1957-07-04 | 1958-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-02 | 1961-07-04 | 1962-01-03 | $7700.00 | Window Closed / Lapsed |