Donald E. Ballard has been granted 14 US patents while listed as an inventor at GE . The first was granted in 1983 and the most recent in June 1994. Donald E. Ballard ranks #332,869 of 4,157,543 US inventors in our database (top 8.0%). Patent records list Donald E. Ballard in Conover, NC, US.
Patents per Year Patents granted per year, 1983 to 1994 Bar chart with a peak of 4 patents in 1988. peak 4 1983: 1 patents 1983 1988: 4 patents 1988 1989: 2 patents 1989 1990: 1 patents 1990 1991: 2 patents 1991 1992: 1 patents 1992 1994: 3 patents 1994
Issued Patents All Time
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Showing 1–14 of 14 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
5321379 Transformer with amorphous alloy core having chip containment means Duane Martin , Alan R. Traut , Rob McClellan 1994-06-14
$8,271,000
5291648 Apparatus for making a transformer core comprising amorphous metal strips surrounding the core window Willi Klappert 1994-03-08
$9,892,000
5285565 Method for making a transformer core comprising amorphous steel strips surrounding the core window Willi Klappert 1994-02-15
$10,754,000
5093981 Method for making a transformer core comprising amorphous metal strips surrounding the core window Willi Klappert 1992-03-10
$18,685,000
5050294 Method for making a transformer core comprising amorphous steel strips surrounding the core window Willi Klappert 1991-09-24
$23,537,000
5005456 Hot shear cutting of amorphous alloy ribbon Peter G. Frischmann , Alan I. Taub 1991-04-09
$24,343,000
4924201 Core and coil assembly for a transformer having an amorphous steel core — 1990-05-08
$14,022,000
4847987 Method of making a core and coil assembly — 1989-07-18
$8,481,000
4814736 Wound transformer core Albert Lee 1989-03-21
$4,603,000
4790064 Method of manufacturing an amorphous metal transformer core and coil assembly Willi Klappert 1988-12-13
$13,170,000
4789849 Amorphous metal transformer core and coil assembly Willi Klappert 1988-12-06
$15,072,000
4741096 Method of manufacturing wound transformer core Albert Lee 1988-05-03
$17,826,000
4734975 Method of manufacturing an amorphous metal transformer core and coil assembly Willi Klappert 1988-04-05
$10,642,000
4413406 Processing amorphous metal into packets by bonding with low melting point material Moreland P. Bennett 1983-11-08
$7,800,000
