Patent US3354064A successfully refreshed from Google Patents.
US3354064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for changing the physical characteristics of an article by electron bombardment
Assignee: Bausch and Lomb Inc
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Filing: 1964-03-30
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Granted: 1967-11-21
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Expires: 1984-03-30
Abstract
No abstract record available.
Inventors
- 👤 Eugene C Letter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:29
CPC Classifications
C; C03; C03C; C03C23/00; C03C23/0005; C03C23/004; Y; Y10; Y10S; Y10S148/00; Y10S148/023; Y10S430/00; Y10S430/143
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A METHOD OF CHANGING THE PHYSICAL CHARACTERISTICS OF AN ARTICLE COMPRISING THE STEP OF PROVIDING AN ARTICLE HAVING FLUORIDE AND REDUCIBLE LEAD IONS THEREIN AND THE STEPS OF REDUCING THE LEAD IONS BY SUBJECTING THE ARTICLE TO ELECTRON BOMBARDMENT.
Claim 2
Independent Claim
39 words
A METHOD OF CHANGING THE PHYSICAL CHARACTERISTICS OF AN ARTICLE COMPRISING THE STEP OF PROVIDING AN ARTICLE HAVING FLUORIDE AND REDUCIBLE LEAD IONS THEREIN AND THE STEPS OF REDUCING THE LEAD IONS BY SUBJECTING THE ARTICLE TO ELECTRON BOMBARDMENT.
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) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |