Patent US4786287A successfully refreshed from Google Patents.
Patent US3242643A successfully refreshed from Google Patents.
US3242643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for degasifying epoxy resin
Assignee: General Electric Co
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Filing: 1963-03-04
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Granted: 1966-03-29
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Expires: 1983-03-04
Abstract
No abstract record available.
Inventors
- 👤 Fred W Moore
- 👤 Merle G Lawson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:08
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/0042; B01D19/0036
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
THE METHOD OF DEGASIFYING AND TRANSPORTING AN EPOXY RESIN FORMULATION TO IMPROVE ITS INSULATING PROPERTIES WHICH COMPRISES SUPPLYING EPOXY RESIN TO A HEATED MIXING TANK WHERE THE RESIN AND ITS FILLERS ARE HEATED AND THOROUGHLY MIXED, CREATING A VACUUM IN A HEATED DEGASSING TANK AND OPENING A FIRST PIPE LINE CONNECTING THE MIXING TANK AND THE DEGASSING TANK TO DRAW THE RESIN INTO THE LATTER TANK, CAUSING THE GAS BUBBLES IN THE RESIN TO BREAK AND EXPEL THE GAS FROM THE RESIN, CLOSING THE FIRST PIPE LINE, CREATING A RELATIVELY LOW PRESSURE IN A HEATED STIR TANK, CREATING A PRESSURE IN THE DEGASSING TANK HIGHER THAN THE PRESSURE IN THE STIR TANK AND HIGHER THAN THE PRIOR VACUUM PRESSURE AND OPENING A SECOND PIPE LINE BETWEEN THE DEGASSING TANK AND THE STIR TANK SO THAT A SMALL PRESSURE DIFFERENTIAL WILL CONVEY THE RESIN FROM THE DEGASSING TANK TO THE STIR TANK AND OUT FROM THE STIR TANK.
Claim 2
Independent Claim
157 words
THE METHOD OF DEGASIFYING AND TRANSPORTING AN EPOXY RESIN FORMULATION TO IMPROVE ITS INSULATING PROPERTIES WHICH COMPRISES SUPPLYING EPOXY RESIN TO A HEATED MIXING TANK WHERE THE RESIN AND ITS FILLERS ARE HEATED AND THOROUGHLY MIXED, CREATING A VACUUM IN A HEATED DEGASSING TANK AND OPENING A FIRST PIPE LINE CONNECTING THE MIXING TANK AND THE DEGASSING TANK TO DRAW THE RESIN INTO THE LATTER TANK, CAUSING THE GAS BUBBLES IN THE RESIN TO BREAK AND EXPEL THE GAS FROM THE RESIN, CLOSING THE FIRST PIPE LINE, CREATING A RELATIVELY LOW PRESSURE IN A HEATED STIR TANK, CREATING A PRESSURE IN THE DEGASSING TANK HIGHER THAN THE PRESSURE IN THE STIR TANK AND HIGHER THAN THE PRIOR VACUUM PRESSURE AND OPENING A SECOND PIPE LINE BETWEEN THE DEGASSING TANK AND THE STIR TANK SO THAT A SMALL PRESSURE DIFFERENTIAL WILL CONVEY THE RESIN FROM THE DEGASSING TANK TO THE STIR TANK AND OUT FROM THE STIR TANK.
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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |