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Jean Youla
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Hartford, CT, US
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last 30 patents
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Patent Grant
Electronic stepper to determine elevator car position, with automat...
Patent number
5,313,026
Issue date
May 17, 1994
Otis Elevator Company
Jean Youla
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Touch button light ring system
Patent number
5,039,832
Issue date
Aug 13, 1991
Otis Elevator Company
Richard R. Polacek
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Capacitive sensing, solid state touch button system
Patent number
5,036,321
Issue date
Jul 30, 1991
Otis Elevator Company
Robert B. Leach
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Call button indicator and wall plate for elevators
Patent number
D318632
Issue date
Jul 30, 1991
Otis Elevator Company
Richard R. Polacek
D10 - Measuring, testing, or signalling instruments
Information
Patent Grant
Detecting a defective suppressor diode in a coil driving circuit
Patent number
4,847,728
Issue date
Jul 11, 1989
Otis Elevator Company
Jean Youla
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Elevator control system
Patent number
4,147,235
Issue date
Apr 3, 1979
Otis Elevator Company
Thomas Henry
B66 - HOISTING LIFTING HAULING