US3301882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of normal lead 2:4-dinitroresorcinate
Assignee: Individual
•
Filing: 1964-01-07
•
Granted: 1967-01-31
•
Expires: 1984-01-07
Abstract
No abstract record available.
Inventors
- 👤 Taylor George William Charles
- 👤 White John Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:13
CPC Classifications
C; C07; C07C; C07C201/00; C07C201/06; C07C201/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A PROCESS FOR THE MANUFACTURE OF NORMAL LEAD 2:4DINITROESORCINATE IN A GRANULAR, FREE-FLOWING FORM WHICH COMPRISES INTERACTING AT A TEMPERATURE BETWEEN ABOUT 50* AND 100*C. A SOLUTION CONTAINING 2:4-DINITROESORCINOL AND SUFFICIENT CAUSTIC ALKALI THEREIN TO PROVIDE A PH VALUE BETWEEN ABOUT 3.3 AND 6.6 WITH A SOLUTION CONSISTING ESSENTIALLY OF A SOLUBLE LEAD SALT, SAID SALT BEING PRESENT IN SAID SOLUTION IN A QUANTITY LESS THAN THE STOICHIOMETRIC QUANTITY REQUIRED TO CONVERT 2:4-DINITRORESORCINOL TO NORMAL LEAD 2:4-DINITORESCORINATE, WHEREBY NORMAL LEAD 2:4-DINITRORESORCINATE IS PRECIPITATED AS A MIXTURE OF COLLOIDAL AND CRYSTALLINE FORMS, THE COLLOIDAL FORM BEING PRESENT IN A RELATIVELY SMALL PROPORTION AND ACTING AS A BINDER FOR THE CRYSTALLINE FORM.
Claim 2
Dependent Claim
110 words
A PROCESS FOR THE MANUFACTURE OF NORMAL LEAD 2:4DINITROESORCINATE IN A GRANULAR, FREE-FLOWING FORM WHICH COMPRISES INTERACTING AT A TEMPERATURE BETWEEN ABOUT 50* AND 100*C. A SOLUTION CONTAINING 2:4-DINITROESORCINOL AND SUFFICIENT CAUSTIC ALKALI THEREIN TO PROVIDE A PH VALUE BETWEEN ABOUT 3.3 AND 6.6 WITH A SOLUTION CONSISTING ESSENTIALLY OF A SOLUBLE LEAD SALT, SAID SALT BEING PRESENT IN SAID SOLUTION IN A QUANTITY LESS THAN THE STOICHIOMETRIC QUANTITY REQUIRED TO CONVERT 2:4-DINITRORESORCINOL TO NORMAL LEAD 2:4-DINITORESCORINATE, WHEREBY NORMAL LEAD 2:4-DINITRORESORCINATE IS PRECIPITATED AS A MIXTURE OF COLLOIDAL AND CRYSTALLINE FORMS, THE COLLOIDAL FORM BEING PRESENT IN A RELATIVELY SMALL PROPORTION AND ACTING AS A BINDER FOR THE CRYSTALLINE FORM.
References Cited (Backward Citations)
US2493551A
Cited
US2493549A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |