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Inventor

MCDONALD JAMES C

US10 patents
⚠️ This page may combine multiple inventors who share the name “MCDONALD JAMES C”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HEWLETT PACKARD CO

4 patents
US4942564AJul 17, 1990

Servo system gain compensation method for magneto-optic disk drives

HEWLETT PACKARD CO84 citations95
US5199011AMar 30, 1993

Apparatus for attenuating optical crosstalk induced components of a focus error signal in an optical disk drive

HEWLETT PACKARD CO30 citations92
US5113384AMay 12, 1992

Focus capture method for magneto-optic disk drives

HEWLETT PACKARD CO29 citations92
US4937440AJun 26, 1990

System and method for beam farfield shift focus compensation

HEWLETT PACKARD CO16 citations73

(unassigned)

3 patents
US6435129B1Aug 20, 2002

Marker setting device and marker

28 citations88
US6802278B2Oct 12, 2004

Marker setting device and marker

13 citations79
USD456294SApr 30, 2002

Utility marker

7 citations69

MCDONALD JAMES C

2 patents
US8925781B2Jan 6, 2015

Utility marker setter

MCDONALD JAMES C2 citations59
USD700858SMar 11, 2014

Utility marker

MCDONALD JAMES C3 citations59

LASER MAGNETIC STORAGE INT

1 patent
US4914645AApr 3, 1990

Optical disk tracking and seeking systems and specific track formats using servo areas

LASER MAGNETIC STORAGE INT14 citations70