Patent US2620312A successfully refreshed from Google Patents.
US2620312A
Expired / Lapsed
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Process of making a bituminous emulsion
Assignee: American Bitumuls and Asphalt Co
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Filing: 1950-09-25
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Granted: 1952-12-02
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Expires: 1970-09-25
Abstract
No abstract record available.
Inventors
- 👤 Donald N Manzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:19
CPC Classifications
C; C08; C08L; C08L95/00; C08L95/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
IN THE PROCESS OF INCORPORATING IN AN OIL-INWATER TYPE EMULSION HAVING WATER AS ITS CONTINUOUS PHASE AND A BITUMEN AS ITS DISCONTINUOUS PHASE, AN ADDITIVE WHICH UPON INCORPORATION THEREIN TENDS TO BREAK SAID EMULSION, THE IMPROVEMENT COMPRISING THE STEP OF MIXING WITH SAID OIL-IN-WATER EMULSION A WATER-IN-OIL TYPE EMULSION HAVING A WATER DISPERSION OF SAID ADDITIVE AS THE DISCONTINOUS PHASE AND A CONTINUOUS PHASE COMPATIBLE WITH THE DISCONTINOUS PHASE OF SAID OIL-IN-WATER EMULSION.
Claim 2
Dependent Claim
73 words
IN THE PROCESS OF INCORPORATING IN AN OIL-INWATER TYPE EMULSION HAVING WATER AS ITS CONTINUOUS PHASE AND A BITUMEN AS ITS DISCONTINUOUS PHASE, AN ADDITIVE WHICH UPON INCORPORATION THEREIN TENDS TO BREAK SAID EMULSION, THE IMPROVEMENT COMPRISING THE STEP OF MIXING WITH SAID OIL-IN-WATER EMULSION A WATER-IN-OIL TYPE EMULSION HAVING A WATER DISPERSION OF SAID ADDITIVE AS THE DISCONTINOUS PHASE AND A CONTINUOUS PHASE COMPATIBLE WITH THE DISCONTINOUS PHASE OF SAID OIL-IN-WATER EMULSION.
References Cited (Backward Citations)
US1733497A
Cited
GB341443A
Cited
AU2353829A
Cited
US1988879A
Cited
US2412526A
Cited
US2412545A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-02 | 1956-06-02 | 1956-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-02 | 1960-06-02 | 1960-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-02 | 1964-06-02 | 1964-12-02 | $7700.00 | Window Closed / Lapsed |