US3075929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous process for foaming a halomethylated diaryloxide
Assignee: Dow Chemical Co
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Filing: 1960-08-04
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Granted: 1963-01-29
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Expires: 1980-08-04
Abstract
No abstract record available.
Inventors
- 👤 Norman T Hebert
- 👤 Earl H Rosenbrock
- 👤 James D Doedens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:50
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A CONTINUOUS FOAMING PROCESS WHICH COMPRISES THE STEPS OF PROVIDING A PLURALITY OF FEED STREAMS OF MISCIBLE COMPLEMENTARY PORTIONS OF LIQUID, IN SITU FORMABLE MATERIAL COMPRISING A MAJOR PROPORTION OF AT LEAST ONE HALOMETHYLATED DIARYLOXIDE WHEREIN THE HALOGENS ARE SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE, AT LEAST ONE OF SAID STREAMS COMPRISING A LEWIS ACID, FOAMINITIATING CATALYST MATERIAL AND BEING AT A TEMPERATURE BELOW ABOUT THAT A WHICH A FOAMING REACTION OCCURS
Claim 2
Dependent Claim
75 words
A CONTINUOUS FOAMING PROCESS WHICH COMPRISES THE STEPS OF PROVIDING A PLURALITY OF FEED STREAMS OF MISCIBLE COMPLEMENTARY PORTIONS OF LIQUID, IN SITU FORMABLE MATERIAL COMPRISING A MAJOR PROPORTION OF AT LEAST ONE HALOMETHYLATED DIARYLOXIDE WHEREIN THE HALOGENS ARE SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE, AT LEAST ONE OF SAID STREAMS COMPRISING A LEWIS ACID, FOAMINITIATING CATALYST MATERIAL AND BEING AT A TEMPERATURE BELOW ABOUT THAT A WHICH A FOAMING REACTION OCCURS
References Cited (Backward Citations)
US2911380A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |