Patent US2621104A successfully refreshed from Google Patents.
US2621104A
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US
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Material for protecting metals from tarnish
Assignee: Nashua Corp
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Filing: 1949-07-26
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Granted: 1952-12-09
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Expires: 1969-07-26
Abstract
No abstract record available.
Inventors
- 👤 Robert H Prew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:37
CPC Classifications
B; B65; B65D; B65D65/00; B65D65/38; B65D65/42; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089; Y10T156/109; Y10T428/00; Y10T428/23907; Y10T428/23921; Y10T428/23929; Y10T428/23936; Y10T428/23943
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
MATERIAL FOR PROTECTING FROM TARNISH SILVER WARE PLACE IN ADJACENCY THERETO, COMPRISING A BACKING ONE FACE OF WHICH IS COVERED BY A PILE CONSISTNG OF RELATIVELY LONG AND RELATIVELY SHORT TEXTILE FLOCK IN SUBSTANTIALLY UNIFORM RELATIVE DISTRIBUTION THROUGHOUT THE AREA OF THE BACKING, THE FLOCKS BEING ADHESIVELY SECURED ENDWISE TO THE FACE OF THE BACKING IN UPSTANDING POSITION, THE SHORT FLOCKS RETAINING IN THE FIBERS THEREOF A SUBSTANCE WHICH AS COMPARED WITH THE SILVERWARE IS PREFERENTIALLY SUSCEPTIBLE TO CHEMICAL ATTACK BY TARNISHING AGENTS IN THE AIR, THE LONG FLOCKS BEING SUBSTANTIALLY FREE OF SUCH SUBSTANCE.
Claim 2
Dependent Claim
95 words
MATERIAL FOR PROTECTING FROM TARNISH SILVER WARE PLACE IN ADJACENCY THERETO, COMPRISING A BACKING ONE FACE OF WHICH IS COVERED BY A PILE CONSISTNG OF RELATIVELY LONG AND RELATIVELY SHORT TEXTILE FLOCK IN SUBSTANTIALLY UNIFORM RELATIVE DISTRIBUTION THROUGHOUT THE AREA OF THE BACKING, THE FLOCKS BEING ADHESIVELY SECURED ENDWISE TO THE FACE OF THE BACKING IN UPSTANDING POSITION, THE SHORT FLOCKS RETAINING IN THE FIBERS THEREOF A SUBSTANCE WHICH AS COMPARED WITH THE SILVERWARE IS PREFERENTIALLY SUSCEPTIBLE TO CHEMICAL ATTACK BY TARNISHING AGENTS IN THE AIR, THE LONG FLOCKS BEING SUBSTANTIALLY FREE OF SUCH SUBSTANCE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |