KENNETH M WILLIAMS
Accountancy in Andover, MA
License number
Massachusetts 5285
Issued Date
Aug 30, 1977
Expiration Date
Jun 30, 1999
Type
Certified Public Accountant
Address
Address
Andover, MA 01810
Professional information
Thermionic Cathode Heater
US Patent:
4634921, Jan 6, 1987
Filed:
Jul 3, 1984
Appl. No.:
6/627649
Inventors:
Kenneth E. Williams - Andover MA
William A. Frutiger - Beverly MA
Kenneth E. Hall - Lynnfield MA
William A. Frutiger - Beverly MA
Kenneth E. Hall - Lynnfield MA
Assignee:
Sony Corporation - Tokyo
International Classification:
H01J 115
US Classification:
313342
Abstract:
A heater for a thermionic cathode for producing an electron beam includes a central wide and a hollow cylindrical conductor with the wire disposed coaxially thereof. The wire and the cylindrical conductor are electrically connected at one end of the heater and at the other end include means for connecting to a power source. Equal electrical currents thus flow in opposite directions in the wire and the cylindrical conductor so that the magnetic fields produced thereby tending to deflect the electron beam cancel each other.
Process And Apparatus For Converged Fine Line Electron Beam Treatment Of Objects
US Patent:
4382186, May 3, 1983
Filed:
Jan 12, 1981
Appl. No.:
6/224313
Inventors:
A. Stuart Denholm - Lincoln MA
William A. Frutiger - Beverly MA
Kenneth E. Williams - Andover MA
William A. Frutiger - Beverly MA
Kenneth E. Williams - Andover MA
Assignee:
Energy Sciences Inc. - Woburn MA
International Classification:
H01J 3700
US Classification:
2504922
Abstract:
This disclosure is concerned with the use of fine line converged electron beams of high aspect ratio for effecting physical, chemical, mechanical and other changes in the surface of objects, and also volume effects, including applications, for example, to semiconductor and other materials surface modification technology, annealing, welding, etching, polishing, cutting, curing and other surface and volume alteration.
Process And Apparatus For Converged Fine Line Electron Beam Treatment Objects
US Patent:
4446373, May 1, 1984
Filed:
Jan 3, 1983
Appl. No.:
6/455266
Inventors:
A. Stuart Denholm - Lincoln MA
William A. Frutiger - Beverly MA
Kenneth E. Williams - Andover MA
William A. Frutiger - Beverly MA
Kenneth E. Williams - Andover MA
Assignee:
Sony Corporation - Tokyo
International Classification:
H01J 3700
US Classification:
2504922
Abstract:
This disclosure is concerned with the use of fine line converged electron beams of high aspect ratio for effecting physical, chemical, mechanical and other changes in the surface of objects, and also volume effects, including applications, for example, to semiconductor and other materials surface modification technology, annealing, welding, etching, polishing, cutting, curing and other surface and volume alteration.
Electron Beam Gun
US Patent:
4731537, Mar 15, 1988
Filed:
Jun 13, 1985
Appl. No.:
6/744396
Inventors:
Kenneth E. Williams - Andover MA
P. Michael Fletcher - North Reading MA
P. Michael Fletcher - North Reading MA
Assignee:
Sony Corporation - Tokyo
International Classification:
G01K 108, G21K 108, H01J 314, H01J 322
US Classification:
250396ML
Abstract:
An electron beam gun generates an electron beam directed at a target. The gun comprises electrodes for creating an electric field along the direction of beam travel and focusing coils for creating a magnetic field along the direction of beam travel. The electrodes include a plurality of members each having a beam-shaping aperture therein for passage of the beam substantially without interception of the electrons in the beam. The electrodes and focusing coils are disposed for accelerating electrons in the beam in non-parallel paths through the beam-shaping apertures and for converging the electrons in the beam in at least one cross-sectional dimension of the beam to minimize that dimension at the target.