US3070427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization apparatus
Assignee: Motors Liquidation Co
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Filing: 1958-07-23
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Granted: 1962-12-25
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Expires: 1978-07-23
Abstract
No abstract record available.
Inventors
- 👤 Edward P Harris
- 👤 James R Wall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:20
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0895; B; B01; B01J; B01J19/00; B01J19/18; B01J19/1862; B29; B29B; B29B7/00; B29B7/74; B29B7/7476; B29B7/7485; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00054; B01J2219/00056; B01J2219/00058; B01J2219/00074; B01J2219/00087; B01J2219/00094; B01J2219/00101; B01J2219/0015; B01J2219/00155; B01J2219/00162; B01J2219/00164
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
APPARATUS FOR CONTINOUSLY PRODUCING IN A SINGLE PASS A POLYMER WHICH IS THE REACTION PRODUCT OF COMPONENTS INCLUDING A POLYMERIC MATERIAL HAVING A PLURALITY OF REACTIVE HYDROGEN GROUPS AND A POLUISOCYANATE COMPRISING A FIRST HIGH VELOCITY MIXING AND HEATING UNIT COMPRISING AN ELONGATES CYLINDRICAL CHAMBER HAVING A DRUM ROTATABLY DISPOSED THEREIN AND PROVIDING A RELATIVELY THIN ELONGATED ANNULAR SPACE THEREBETWEEN, SAID DRUM INCLUDING A PLURALITY OF MIXING AND SCRAPING BLADES ATTACHED TO THE PERIPHERY THEREOF AND ADAPTED FOR SCRAPING SAID CHAMBER SURFACE TO EXPOSE SAID SURFACE TO FRESH PORTION OF
Claim 2
Dependent Claim
90 words
APPARATUS FOR CONTINOUSLY PRODUCING IN A SINGLE PASS A POLYMER WHICH IS THE REACTION PRODUCT OF COMPONENTS INCLUDING A POLYMERIC MATERIAL HAVING A PLURALITY OF REACTIVE HYDROGEN GROUPS AND A POLUISOCYANATE COMPRISING A FIRST HIGH VELOCITY MIXING AND HEATING UNIT COMPRISING AN ELONGATES CYLINDRICAL CHAMBER HAVING A DRUM ROTATABLY DISPOSED THEREIN AND PROVIDING A RELATIVELY THIN ELONGATED ANNULAR SPACE THEREBETWEEN, SAID DRUM INCLUDING A PLURALITY OF MIXING AND SCRAPING BLADES ATTACHED TO THE PERIPHERY THEREOF AND ADAPTED FOR SCRAPING SAID CHAMBER SURFACE TO EXPOSE SAID SURFACE TO FRESH PORTION OF
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-24 | 1966-06-25 | 1966-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-24 | 1970-06-25 | 1970-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-24 | 1974-06-25 | 1974-12-25 | $7700.00 | Window Closed / Lapsed |