Patent US3240744A successfully refreshed from Google Patents.
US3240744A
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Use of fusion aids in fluidized bed coating techniques
Assignee: Pennwalt Corp
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Filing: 1961-10-19
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Granted: 1966-03-15
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Expires: 1981-10-19
Abstract
No abstract record available.
Inventors
- 👤 Raymond V Kusiak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:52
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/18; B05D1/22; B05D1/24; B05D2506/00; B05D2506/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
IN THE PROCESS OF COATING SURFACES BY THE FLUIDIZED BED TECHNIQUE WHEREIN THE COATING MATERIAL IS A POLYVINYLIDENE FLUORIDE RESIN HAVING A MELT VISCOSITY GREATER THAN 1 MEGAPOISE, THE IMPROVEMENT WHICH CONSISTS OF DISPERSING IN SAID COATING MATERIAL BETWEEN ABOUT 5 AND ABOUT 45 PARTS BY WEIGHT PER 100 PARTS OF SAID COATING MATERIAL OF A NEUTRAL POLYESTER TERMINATED WITH A GROUP SELECTED FROM THE CLASS CONSISTING OF HYDROXYL AND ESTER GROUPS AND HAVING A MOLECULAR WEIGHT BETWEEN ABOUT 1000 AND ABOUT 3000 OBTAINED BY THE CONDENSATION POLYMERIZATION OF AN ALIPHATIC DIOL WITH AN ALIPHATIC DIBASIC ACID WHEREBY CONTINUOUS PINHOLE-FREE COATINGS ARE OBTAINED IN THE FLUIDIZED BED COATING PROCEDURE.
Claim 2
Dependent Claim
109 words
IN THE PROCESS OF COATING SURFACES BY THE FLUIDIZED BED TECHNIQUE WHEREIN THE COATING MATERIAL IS A POLYVINYLIDENE FLUORIDE RESIN HAVING A MELT VISCOSITY GREATER THAN 1 MEGAPOISE, THE IMPROVEMENT WHICH CONSISTS OF DISPERSING IN SAID COATING MATERIAL BETWEEN ABOUT 5 AND ABOUT 45 PARTS BY WEIGHT PER 100 PARTS OF SAID COATING MATERIAL OF A NEUTRAL POLYESTER TERMINATED WITH A GROUP SELECTED FROM THE CLASS CONSISTING OF HYDROXYL AND ESTER GROUPS AND HAVING A MOLECULAR WEIGHT BETWEEN ABOUT 1000 AND ABOUT 3000 OBTAINED BY THE CONDENSATION POLYMERIZATION OF AN ALIPHATIC DIOL WITH AN ALIPHATIC DIBASIC ACID WHEREBY CONTINUOUS PINHOLE-FREE COATINGS ARE OBTAINED IN THE FLUIDIZED BED COATING PROCEDURE.
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US2435537A
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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) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |