US3298828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of leaded brass alloys for improving machineability and products so produced
Assignee: Bristol Brass Corp
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Filing: 1962-07-05
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Granted: 1967-01-17
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Expires: 1982-07-05
Abstract
No abstract record available.
Inventors
- 👤 Lewis E Thelin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:56
CPC Classifications
C; C22; C22C; C22C9/00; C22C9/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
61 words
FREE-CUTTING BRASS HAVING IMPROVED MACHINING QUALITIES CONTAINING AN ADDITIVE SELECTED FROM THE GROUP OF LITHIUM AND ADMIXTURES OF LITHIUM AND CALCIUM IN AN AMOUNT OF FROM TWO TO EIGHT OUNCES OF ADDITIVE PER THOUSAND POUNDS OF BRASS, SAID AMOUNT BEING DETERMINED BY THE ADDITION OF THE SAID AMOUNT OF ADDITIVE TO THE BRASS WHEN SAID BRASS IS IN A MOLTEN STATE.
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) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |