WK

Willi Klappert

GE: 19 patents #1,473 of 36,430Top 5%
Overall (All Time): #242,734 of 4,157,543Top 6%
19
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5548887 Method of making a transformer core from strips of amorphous steel — 1996-08-27
5528817 Apparatus for making packets of amorphous steel strip for transformer core manufacture David R. Freeman 1996-06-25
5347706 Method for making packets of amorphous steel strip for transformer core manufacture David R. Freeman 1994-09-20
5321883 Apparatus for making a transformer core comprising strips of amorphous stell wrapped around the core window David R. Freeman 1994-06-21
5315754 Method of making a transformer core comprising strips of amorphous steel wrapped around the core window William K. Houser 1994-05-31
5291648 Apparatus for making a transformer core comprising amorphous metal strips surrounding the core window Donald E. Ballard 1994-03-08
5285565 Method for making a transformer core comprising amorphous steel strips surrounding the core window Donald E. Ballard 1994-02-15
5230139 Method of making a transformer core comprising strips of amorphous steel wrapped around the core window William K. Houser 1993-07-27
5191700 Method for making packets of amorphous metal strip for transformer-core manufacture David R. Freeman 1993-03-09
5093981 Method for making a transformer core comprising amorphous metal strips surrounding the core window Donald E. Ballard 1992-03-10
5063654 Method for making packets of amorphous metal strip for transformer-core manufacture David R. Freeman 1991-11-12
5050294 Method for making a transformer core comprising amorphous steel strips surrounding the core window Donald E. Ballard 1991-09-24
4790064 Method of manufacturing an amorphous metal transformer core and coil assembly Donald E. Ballard 1988-12-13
4789849 Amorphous metal transformer core and coil assembly Donald E. Ballard 1988-12-06
4734975 Method of manufacturing an amorphous metal transformer core and coil assembly Donald E. Ballard 1988-04-05
4724592 Method of manufacturing a core and winding assembly Robert H. Hunt 1988-02-16
4646048 Core and winding assembly with relieved core edges and method of manufacture thereof Robert H. Hunt 1987-02-24
4570141 Wound core for an electric transformer — 1986-02-11
4467632 Method of making a wound core for an electric transformer — 1984-08-28