US2531114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antitarnish composition
Assignee: Beam Products Inc
•
Filing: 1949-08-03
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Granted: 1950-11-21
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Expires: 1969-08-03
Abstract
No abstract record available.
Inventors
- 👤 Dietz Waldemar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:26
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/34; C; C23; C23F; C23F15/00; B01D2253/00; B01D2253/10; B01D2253/106; B01D2257/00; B01D2257/30; B01D2257/302; B01D2257/304; B01D2257/80; B01D2259/00; B01D2259/40; B01D2259/414; B01D2259/4141; B01D2259/4145; B01D2259/4146
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
40 words
A COMPOSITION FOR PURIFYING THE AMBIENT AIR ADJACENT METAL SURFACES TO PREVENT TARNISHING OF SAME COMPRISING ABOUT 20 TO ABOUT 35% BY WEIGHT OF POWDERED PERBORAGTE OF SODA AND ABOUT 80 TO ABOUT 65% BY WEIGHT OF GRANULATED SILICA GEL.
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) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |