US3050422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lens cleaning process
Assignee: Bausch and Lomb Inc
•
Filing: 1960-02-18
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Granted: 1962-08-21
•
Expires: 1980-02-18
Abstract
No abstract record available.
Inventors
- 👤 Theodore J Zak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:24
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/0005; C11D3/0078; C11D7/00; C11D7/02; C11D7/04; C11D7/06; C11D2111/00; C11D2111/10; C11D2111/14; C11D2111/18; C11D2111/40; C11D2111/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
THE METHOD OF CLEANING GLASS LENSES COMPRISING ULTRASONICALLY VIBRATING THE LENSES WHILE THEY ARE DISPOSED IN A STRONG ALKALINE SOLUTION CONTAINING AT LEAST 48 PERCENT
Claim 2
Independent Claim
25 words
THE METHOD OF CLEANING GLASS LENSES COMPRISING ULTRASONICALLY VIBRATING THE LENSES WHILE THEY ARE DISPOSED IN A STRONG ALKALINE SOLUTION CONTAINING AT LEAST 48 PERCENT
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) | 1965-08-20 | 1966-02-19 | 1966-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-20 | 1970-02-19 | 1970-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-20 | 1974-02-19 | 1974-08-21 | $7700.00 | Window Closed / Lapsed |