1
Garo Khanarian
Garo Khanarian, Donald Raskin, Alan Buckley, Gordon W Calundann, Anthony J East: Copolymeric nonlinear optical media. Hoechst Celanese, Depaoli & O Brien, September 18, 1990: US04957655 (15 worldwide citation)

In a preferred embodiment this invention provides a second order nonlinear optical film medium which consists of a thermoplastic copolymer which has a crystallographic molecular alignment, and a net dipolar molecular orientation normal to the film plane. The crystallographic molecular alignment is f ...


2
Philip M Anderson III, Ronald K Reich, Donald Raskin: Tuned vibration detector. Allied Corporation, Ernest D Buff, Paul Yee, Gerhard H Fuchs, October 30, 1984: US04479389 (78 worldwide citation)

This invention provides a vibration sensor for detecting vibrations having preselected frequencies. The sensor has a plurality of tuning mechanisms each being mechanically resonant with a different preselected vibrational frequency. The resonating vibrational movements of these tuning mechanisms app ...


3
Donald Raskin, Kophu Chiang, James B Stamatoff: Cable system incorporating highly linear optical modulator. Hoechst Celanese, Anthony Handal, July 9, 1991: US05031235 (32 worldwide citation)

A system incorporating a pair of Mach-Zehnder modulators (164,166) for performing amplitude modulation of an optical carrier is disclosed. Each of the modulators is designed to suppress even order distortion products and develop third order distortion products of opposite sign and equal magnitude. T ...


4
Donald Raskin, Hyun Nam Yoon: Polarization-insensitive interferometric waveguide electrooptic modulator. Hoechst Celanese, Depaoli & O Brien, June 26, 1990: US04936644 (18 worldwide citation)

In one embodiment this invention provides a polarization-insensitive interferometric waveguide electrooptic modulator device. In a Mach-Zender type of waveguide geometry, each of the divergent optical paths has a set of electrodes, one of which applies a horizontal electric field and the other a ver ...


5
Donald Raskin, James E Kearney, Errol A Haznedar: Magnetostrictive acoustic transducer. Allied Signal, Gus T Hampilos, Ernest D Buff, Gerhard H Fuchs, December 29, 1987: US04716556 (12 worldwide citation)

An acoustic transducer is provided that uses a layer of magnetostrictive ferromagnetic material having high magneto-mechanical coupling. The ferromagnetic material is adhered to a part of the outer surface of a resilient rod, so that an incident acoustic signal causes a change in stress in the magne ...


6
Philip M Anderson III, Donald Raskin, Ronald K Reich: Tuned vibration detector. Allied Corporation, Ernest D Buff, Paul Yee, Gerhard H Fuchs, August 7, 1984: US04463610 (11 worldwide citation)

This invention comprises a vibration sensor for detecting engine knock. The sensor has a tuning mechanism which is mechanically resonant with a preselected vibrational frequency. The resonating movements of this tuning mechanism are adapted to apply varying stress to an associated magnetostrictive e ...