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USPTO Patent Rankings Data through Dec 31, 2025
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Willi Klappert — 19 Patents

GE: 19 patents #1,485 of 36,430Top 5%
Hickory, NC: #45 of 547 inventorsTop 9%
North Carolina: #2,455 of 45,564 inventorsTop 6%
Overall (All Time): #229,345 of 4,157,543Top 6%
19 Patents All Time
Willi Klappert has been granted 19 US patents while listed as an inventor at GE. The first was granted in 1984 and the most recent in August 1996. Willi Klappert ranks #229,345 of 4,157,543 US inventors in our database (top 5.5%). Patent records list Willi Klappert in Hickory, NC, US.

Patents per Year

Patents granted per year, 1984 to 1996Bar chart with a peak of 5 patents in 1994.peak 51984: 1 patents19841986: 1 patents19861987: 1 patents19871988: 4 patents19881991: 2 patents19911992: 1 patents19921993: 2 patents19931994: 5 patents19941996: 2 patents1996

Issued Patents All Time

Showing 1–19 of 19 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5548887 Method of making a transformer core from strips of amorphous steel 1996-08-27 $36,796,000
5528817 Apparatus for making packets of amorphous steel strip for transformer core manufacture David R. Freeman 1996-06-25 $24,154,000
5347706 Method for making packets of amorphous steel strip for transformer core manufacture David R. Freeman 1994-09-20 $17,218,000
5321883 Apparatus for making a transformer core comprising strips of amorphous stell wrapped around the core window David R. Freeman 1994-06-21 $21,876,000
5315754 Method of making a transformer core comprising strips of amorphous steel wrapped around the core window William K. Houser 1994-05-31 $9,428,000
5291648 Apparatus for making a transformer core comprising amorphous metal strips surrounding the core window Donald E. Ballard 1994-03-08 $9,892,000
5285565 Method for making a transformer core comprising amorphous steel strips surrounding the core window Donald E. Ballard 1994-02-15 $10,754,000
5230139 Method of making a transformer core comprising strips of amorphous steel wrapped around the core window William K. Houser 1993-07-27 $14,958,000
5191700 Method for making packets of amorphous metal strip for transformer-core manufacture David R. Freeman 1993-03-09 $25,026,000
5093981 Method for making a transformer core comprising amorphous metal strips surrounding the core window Donald E. Ballard 1992-03-10 $18,685,000
5063654 Method for making packets of amorphous metal strip for transformer-core manufacture David R. Freeman 1991-11-12 $10,695,000
5050294 Method for making a transformer core comprising amorphous steel strips surrounding the core window Donald E. Ballard 1991-09-24 $23,537,000
4790064 Method of manufacturing an amorphous metal transformer core and coil assembly Donald E. Ballard 1988-12-13 $13,170,000
4789849 Amorphous metal transformer core and coil assembly Donald E. Ballard 1988-12-06 $15,072,000
4734975 Method of manufacturing an amorphous metal transformer core and coil assembly Donald E. Ballard 1988-04-05 $10,642,000
4724592 Method of manufacturing a core and winding assembly Robert H. Hunt 1988-02-16 $26,618,000
4646048 Core and winding assembly with relieved core edges and method of manufacture thereof Robert H. Hunt 1987-02-24 $5,537,000
4570141 Wound core for an electric transformer 1986-02-11 $7,725,000
4467632 Method of making a wound core for an electric transformer 1984-08-28 $4,719,000