US2989389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primer charge for detonators
Assignee: Dynamit Nobel AG
•
Filing: 1957-04-19
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Granted: 1961-06-20
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Expires: 1977-04-19
Abstract
No abstract record available.
Inventors
- 👤 Prior Josef
- 👤 Florin Aloys
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:52
CPC Classifications
C; C06; C06B; C06B35/00; C06B21/00; C06B21/0083
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A PRIMER CHARGE FOR A DETONATOR CONSISTING ESSENTIALLY OF LEAD-AZIDE HAVING LEAD CHROMATE BOUND TO AT LEAST THE SURFACE THEREOF, SAID LEAD CHROMATE BEING PRESENT IN AN AMOUNT OF FROM 5 TO 50%.
Claim 2
Dependent Claim
33 words
A PRIMER CHARGE FOR A DETONATOR CONSISTING ESSENTIALLY OF LEAD-AZIDE HAVING LEAD CHROMATE BOUND TO AT LEAST THE SURFACE THEREOF, SAID LEAD CHROMATE BEING PRESENT IN AN AMOUNT OF FROM 5 TO 50%.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |