Patent US4052266A successfully refreshed from Google Patents.
Patent US3770667A successfully refreshed from Google Patents.
US3770667A
Expired / Lapsed
US
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Phonograph record additive
Assignee: ABC Dispersion Chemical Co
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Filing: 1971-10-01
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Granted: 1973-11-06
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Expires: 1991-10-01
Abstract
Abstract THE DISCLOSURE DESCRIBES A FLUID PHONOGRAPH RECORD ADDITIVE COMPRISING ABOUT 30-90% GRINDING VEHICLE AND ABOUT 10-70% CARBON BLACK, SAID CARBON BLACK HAVING AN AVERAGE PARTICLE DIAMETER OF LESS THAN NINE AND PREFERABLY LESS THAN 1 MILLIMICRON. THE USE OF THE FOREGOING FLUID ADDITIVE IN VINYL PLASTIC PHONOGRAPH RECORDS RESULTS IN PHONOGRAPH RECORDS WHICH MAY BE PRODUCED MORE EFFICIENTLY AND WHICH HAVE LOW NOISE AND IMPROVED PROCESSABILITY.
Inventors
- 👤 D Tucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:01
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L67/00; C08L67/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |