Patent US2237705A successfully refreshed from Google Patents.
US3242575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lyophilization apparatus
Assignee: Individual
•
Filing: 1961-08-08
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Granted: 1966-03-29
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Expires: 1981-08-08
Abstract
No abstract record available.
Inventors
- 👤 Manaresi Alessandra
- 👤 Manaresi Giuliana
- 👤 Manaresi Adriana
- 👤 Manaresi Ida Paolia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:08
CPC Classifications
A; A23; A23B; A23B2/00; A23B2/90; A23B2/92; A23F; A23F3/00; A23F3/16; A23F3/22; A23F3/26; A23F5/00; A23F5/24; A23F5/28; A23F5/32; A23L; A23L2/00; A23L2/02; A23L2/08; A23L2/12; A23L2/14; F; F26; F26B; F26B5/00; F26B5/04; F26B5/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
184 words
A LYOPHILIZATION APPARATUS COMPRISING REFRIGERATION MEANS FOR FREEZING A MASS OF MATERIAL TO BE LYOPHILIZED, A REFRIGERATED VACUUM CHAMBER HAVING SPACED END WALLS, MEANS FOR TRANSFERRING THE FROZEN MASS OF MATERIAL FROM SAID REFRIGERATION MEANS TO SAID CHAMBER, SUCTION DUCT CONNECTED TO ONE OF SAID END WALLS, A FIRST SOURCE OF HEAT POSITIONED IN PROXIMITY TO THE OTHER OF SAID END WALLS FOR APPLYING HEAT TO A PORTION OF SAID MATERIAL REMOTE FROM SAID SUCTION DUCT, A SECOND SOURCE OF HEAT IN SAID CHAMBER SPACED FROM THE FIRST SOURCE AND INDEPENDENT OF THE FIRST SOURCE OF HEAT SO THAT THE FIRST SOURCE MAY BE ACTIVATED WHILE THE SECOND SOURCE IS DEACTIVATED AND VICE VERSA, SAID SECOND SOURCE BEING LOCATED INTERMEDIATE SAID END WALLS AND CLOSER TO SAID ONE END WALL OF THE CHAMBER THAN THE FIRST SOURCE, AND MEANS FOR CONTROLLING THE SOURCES OF HEAT INDEPENDENTLY OF EACH OTHER SO THAT VAPORS ARISING FROM HEATED PORTIONS OF SAID MASS AND BEING DRAWN OFF THROUGH SAID SUCTION DUCT WILL ALWAYS REMAIN BELOW SATURATION, WHEREBY CONDENSATION OF LIQUID IN SAID CHAMBER FROM SAID VAPORS IS PREVENTED.
Claim 2
Dependent Claim
184 words
A LYOPHILIZATION APPARATUS COMPRISING REFRIGERATION MEANS FOR FREEZING A MASS OF MATERIAL TO BE LYOPHILIZED, A REFRIGERATED VACUUM CHAMBER HAVING SPACED END WALLS, MEANS FOR TRANSFERRING THE FROZEN MASS OF MATERIAL FROM SAID REFRIGERATION MEANS TO SAID CHAMBER, SUCTION DUCT CONNECTED TO ONE OF SAID END WALLS, A FIRST SOURCE OF HEAT POSITIONED IN PROXIMITY TO THE OTHER OF SAID END WALLS FOR APPLYING HEAT TO A PORTION OF SAID MATERIAL REMOTE FROM SAID SUCTION DUCT, A SECOND SOURCE OF HEAT IN SAID CHAMBER SPACED FROM THE FIRST SOURCE AND INDEPENDENT OF THE FIRST SOURCE OF HEAT SO THAT THE FIRST SOURCE MAY BE ACTIVATED WHILE THE SECOND SOURCE IS DEACTIVATED AND VICE VERSA, SAID SECOND SOURCE BEING LOCATED INTERMEDIATE SAID END WALLS AND CLOSER TO SAID ONE END WALL OF THE CHAMBER THAN THE FIRST SOURCE, AND MEANS FOR CONTROLLING THE SOURCES OF HEAT INDEPENDENTLY OF EACH OTHER SO THAT VAPORS ARISING FROM HEATED PORTIONS OF SAID MASS AND BEING DRAWN OFF THROUGH SAID SUCTION DUCT WILL ALWAYS REMAIN BELOW SATURATION, WHEREBY CONDENSATION OF LIQUID IN SAID CHAMBER FROM SAID VAPORS IS PREVENTED.
References Cited (Backward Citations)
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Cited
US1970956A
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US2453033A
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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) | 1969-03-28 | 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 |