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Flawil, CH
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Patents Grants
last 30 patents
Information
Patent Grant
Vapor lead-through system for a rotary evaporator, and a rotary eva...
Patent number
6,709,025
Issue date
Mar 23, 2004
Büchi Labortechnik AG
Arthur Spring
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Vacuum membrane pump and a head portion for a vacuum membrane pump
Patent number
5,876,190
Issue date
Mar 2, 1999
Buchi Labortechnik AG
Arthur Spring
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Extractor for soxhlet solid-liquid extraction
Patent number
5,776,317
Issue date
Jul 7, 1998
Buchi Labortechnik AG
Arthur Spring
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Evaporator flask for a rotary evaporator
Patent number
5,759,356
Issue date
Jun 2, 1998
Buchi Labortechnik AG
Arthur Spring
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Evaporator flask for a rotary evaporator
Patent number
5,536,374
Issue date
Jul 16, 1996
Buchi Labortechnik AG
Arthur Spring
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Sealing device for a rotary evaporator
Patent number
5,243,836
Issue date
Sep 14, 1993
Buchi Laboratorium-Technik AG
Arthur Spring
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Distilling unit
Patent number
4,303,614
Issue date
Dec 1, 1981
Buchi Laboratoriums-Technik AG
Arthur Spring
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Patents Applications
last 30 patents
Information
Patent Application
Vapour lead-through system for a rotary evaporator, and a rotary ev...
Publication number
20010020368
Publication date
Sep 13, 2001
Arthur Spring
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL