US2589703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lead styphnate and process of manufacturing same
Assignee: Remington Arms Co LLC
•
Filing: 1950-08-17
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Granted: 1952-03-18
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Expires: 1970-08-17
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Kenney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:44
CPC Classifications
C; C07; C07C; C07C205/00; C07C205/13; C07C205/20; C07C205/21; C07C205/24; C06; C06B; C06B41/00; C06B41/02; C07B; C07B2200/00; C07B2200/13
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
75 words
IN THE MANUFACTURE OF THE NORMAL LEAD SALT OF STYPHNIC ACID, THE METHOD WHICH COMPRISES THE ADDITION TO A SUSPENSION OF ABOUT 10 GRAMS OF STYPHNIC ACID IN ABOUT 100 CC. OF WATER UNDER AGITATION AND AT ABOUT 70* TO 75* C. OF ABOUT 10 CC. OF ABOUT 8-NORMAL POTASSIUM HYDROXIDE, THE FURTHER ADDITION WITH CONTINUED AGITATION OF ABOUT 50 CC. OF A 40% SOLUTION OF LEAD NITRATE, AND THE RECOVERY OF THE RESULTING PRECIPITATE.
Claim 2
Dependent Claim
75 words
IN THE MANUFACTURE OF THE NORMAL LEAD SALT OF STYPHNIC ACID, THE METHOD WHICH COMPRISES THE ADDITION TO A SUSPENSION OF ABOUT 10 GRAMS OF STYPHNIC ACID IN ABOUT 100 CC. OF WATER UNDER AGITATION AND AT ABOUT 70* TO 75* C. OF ABOUT 10 CC. OF ABOUT 8-NORMAL POTASSIUM HYDROXIDE, THE FURTHER ADDITION WITH CONTINUED AGITATION OF ABOUT 50 CC. OF A 40% SOLUTION OF LEAD NITRATE, AND THE RECOVERY OF THE RESULTING PRECIPITATE.
Claim 3
Dependent Claim
13 words
THE COMPOSITION OF MATTER NORMAL LEAD STYPHNATE IN CRYSTALS WHICH ARE RECTANGULAR PARALLELOPIPEDS.
Claim 4
Dependent Claim
13 words
THE COMPOSITION OF MATTER NORMAL LEAD STYPHNATE IN CRYSTALS WHICH ARE RECTANGULAR PARALLELOPIPEDS.
References Cited (Backward Citations)
US1443328A
Cited
US1999728A
Cited
US1889116A
Cited
US1942274A
Cited
US2137234A
Cited
US2295104A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |