US3354136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material treatment methods
Assignee: Crawford and Russell Inc
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Filing: 1965-03-08
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Granted: 1967-11-21
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Expires: 1985-03-08
Abstract
No abstract record available.
Inventors
- 👤 James R Crawford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:35
CPC Classifications
A; A23; A23D; A23D9/00; A23D9/02; B; B01; B01D; B01D1/00; B01D1/22; B01F; B01F27/00; B01F27/05; B01F27/09; B01F27/091; B01F27/80; B01F27/92; B01F27/921; B01F27/9211; B01F35/00; B01F35/10; B01F35/145; B01F35/90; B01F35/93; B01J; B01J19/00; B01J19/18; B01J19/20; C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C11; C11D; C11D13/00; C11D13/12; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00076; B01J2219/00085; B01J2219/00087; B01J2219/00094; B01J2219/18; B01J2219/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
THE METHOD OF MIXING MATERIALS IN POLYMERIZATION REACTIONS WHILE CONTROLLING THE TEMPERATURE OF THE MATERIAL MASS,COMPRISING THE STEPS OF (A) BRINGING THE MATERIALS TOGETHER, (B) MOVING THE MATERIALS THROUGH A LONGITUDINALLY-ELONGATED FIRST TREATMENT ZONE BOUNDED BY A FIRST IMPERFORATE AND UNBROKEN HEAT TRANSFER SURFACE FORMING A RIGHT CIRCULAR CYLINDER, (C) TRAVERSING ANGULARLY INCLINED BLADE MEANS ALONG THE FIRST HEAT TRANSFER SURFACE AND THEREBY (1) REMOVING MATERIALS DEPOSITED ON SAID FIRST SURFACE, AND (2) IMPARTING MOTION TO THE REMOVED MATERIALS IN A DIRECTION SUBSTANTIALLY TRANSVERSE TO THE LONGITUDINAL PATH OF THE MATERIALS PASSING THROUGH THE FIRST TREATMENT ZONE,
Claim 2
Independent Claim
97 words
THE METHOD OF MIXING MATERIALS IN POLYMERIZATION REACTIONS WHILE CONTROLLING THE TEMPERATURE OF THE MATERIAL MASS,COMPRISING THE STEPS OF (A) BRINGING THE MATERIALS TOGETHER, (B) MOVING THE MATERIALS THROUGH A LONGITUDINALLY-ELONGATED FIRST TREATMENT ZONE BOUNDED BY A FIRST IMPERFORATE AND UNBROKEN HEAT TRANSFER SURFACE FORMING A RIGHT CIRCULAR CYLINDER, (C) TRAVERSING ANGULARLY INCLINED BLADE MEANS ALONG THE FIRST HEAT TRANSFER SURFACE AND THEREBY (1) REMOVING MATERIALS DEPOSITED ON SAID FIRST SURFACE, AND (2) IMPARTING MOTION TO THE REMOVED MATERIALS IN A DIRECTION SUBSTANTIALLY TRANSVERSE TO THE LONGITUDINAL PATH OF THE MATERIALS PASSING THROUGH THE FIRST TREATMENT ZONE,
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |