Patent US2840564A successfully refreshed from Google Patents.
US2840564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber accelerator
Assignee: Wyeth Holdings LLC
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Filing: 1956-08-01
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Granted: 1958-06-24
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Expires: 1976-08-01
Abstract
No abstract record available.
Inventors
- 👤 Robert C Kinstler
- 👤 Robert S Barker
- 👤 Brunnstrom Gosta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:58
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K9/00; C08K9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A METHOD OF PELETIZING BENZOTHIAZOLYDISULDIDE WHICH COMPRISES: AGITATING AN AQUEOUS SLURRY COMPRISING BENZOTHIAZOLYLDISULFIDE AND AMINOTHIOPHENOL AT AN ELEVATED TEMPERATURE FOR SUFFICIENT TIE TO AGGLOMERATE THE BENZOTHIAZOLYLDISSULFIDE, AND SEPARATING RESULTANT PELLETS.
Claim 2
Independent Claim
30 words
A METHOD OF PELETIZING BENZOTHIAZOLYDISULDIDE WHICH COMPRISES: AGITATING AN AQUEOUS SLURRY COMPRISING BENZOTHIAZOLYLDISULFIDE AND AMINOTHIOPHENOL AT AN ELEVATED TEMPERATURE FOR SUFFICIENT TIE TO AGGLOMERATE THE BENZOTHIAZOLYLDISSULFIDE, AND SEPARATING RESULTANT PELLETS.
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) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |