US3095268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of lead azide
Assignee: Individual
•
Filing: 1955-07-11
•
Granted: 1963-06-25
•
Expires: 1975-07-11
Abstract
No abstract record available.
Inventors
- 👤 Bostrom Allan Gustav
- 👤 Ek Stig Yngve
- 👤 Lindner Lars Anders Malte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:11
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A METHOD OF PRODUCING LEAD AZIDE BY REACTING A SOLUTION OF LEAD NITRATE WITH A SOLUTION OF ALKALI METAL AZIDE COMPRISING THE STEPS OF HEATING BOTH SOLUTIONS TO A TEMPERATURE OF AT LEAST 65*C., ADDING A QUANTITY OF THE ALKALI AZIDE SOLUTION TO AN EXCESS QUANTITY OF THE LEAD NITRATE SOLUTION IN A MOLE PROPORTION OF AT MOST 1.5:4, AND FILTERING OFF THE LEAD AZIDE PRECIPITATE OBTAINED FROM THE LEAD NITRATE SOLUTION.
Claim 2
Independent Claim
72 words
A METHOD OF PRODUCING LEAD AZIDE BY REACTING A SOLUTION OF LEAD NITRATE WITH A SOLUTION OF ALKALI METAL AZIDE COMPRISING THE STEPS OF HEATING BOTH SOLUTIONS TO A TEMPERATURE OF AT LEAST 65*C., ADDING A QUANTITY OF THE ALKALI AZIDE SOLUTION TO AN EXCESS QUANTITY OF THE LEAD NITRATE SOLUTION IN A MOLE PROPORTION OF AT MOST 1.5:4, AND FILTERING OFF THE LEAD AZIDE PRECIPITATE OBTAINED FROM THE LEAD NITRATE SOLUTION.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |