Patent US3257231A successfully refreshed from Google Patents.
US3257231A
Expired / Lapsed
US
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Emulsion breaking process
Assignee: MacMillan Ring Free Oil Co Inc
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Filing: 1965-03-12
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Granted: 1966-06-21
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Expires: 1985-03-12
Abstract
No abstract record available.
Inventors
- 👤 Paul R Mceachran
- 👤 Schmitt Herbert Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:04
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
53 words
THE PROCESS OF APPLYING AN ASPHALT-WATER EMULSION TO A SURFACE TO BE COVERED THEREWITH THAT INCLUDES THE STEPS OF SPRAYING AN ANIONIC ASPHALT-WATER EMULSION ON SAID SURFACE; AND SIMULTANEOUSLY BUT SEPARATELY ATOMIZING AND MIXING WITH THE EMULSION SPRAY A SOLUTION OF A SURFACE ACTIVE AGENT OF THE CATIONIC TYPE THAT BREAKS THE EMULSION.
References Cited (Backward Citations)
US2314329A
Cited
US2585336A
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US2780554A
Cited
US2706688A
Cited
US2862830A
Cited
US2900350A
Cited
US2974107A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |