US2777008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of rubber vulcanizates containing filler and polyethylene glycol ethers
Assignee: Rhein Chemie Rheinau GmbH
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Filing: 1951-06-13
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Granted: 1957-01-08
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Expires: 1971-06-13
Abstract
No abstract record available.
Inventors
- 👤 Kern Rudolf
- 👤 Lautsch Willy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:54
CPC Classifications
C; C08; C08L; C08L21/00; C08L7/00; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
70 words
PROCESS FOR THE MANUFACTURING OF RUBBER VULCANIZATES, COMPRISING COMPOUNDING NATURAL RUBBER, LIGHT-COLORED HYDROPHILIC FILLERS, AND ADDITION AGENTS SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE GLYCOL ETHERS OF ALIPHATIC MONOHYDRIC ALCOHOLS HAVING 12 TO 20 CARBON ATOMS, POLYETHYLENE GLYCOL ETHERS OF ALKYLATED PHENOLS, HEXYLHEPTYL-NAPHTHOL-POLYETHYLENE GLYCOL ETHERS, AND MIXTURES THEREOF, SAID LIGHT-COLORED HYDROPHILIC FIBERS BEING SELECTED FROM THE GROUP CONSISTING OF ALUMINA GEL, ALUMINUM SILICATE, CALCIUM SILICATE, PYROGENIC SILICA, AND MIXTURES THEREOF.
References Cited (Backward Citations)
US2099651A
Cited
US2118506A
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US2354424A
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US2343091A
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US2360895A
Cited
US2386764A
Cited
US2381388A
Cited
US2419512A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |