Inventor · disambiguated record
Hans Krapfenbauer
Also filed as: KRAPFENBAUER HANS
7 granted patents·64 citations·filing 1977–1996
84Inventor score
Top patents by PatentIndex Score
7 records- 0150US4796345AMethod of fabricating a rim gear, such as a starter rim gear made of sheet metalGROB ERNST FA·Filed 1987·Granted Jan 10, 1989·13 cites·4 claims
- 0248US5355706AProcess for the production of a hollow workpiece being profiled at least internally in a straight or helical manner relative to the workpiece axisGROB ERNST FA·Filed 1993·Granted Oct 18, 1994·10 cites·7 claims
- 0346US4307592ACold rolling method and cold rolling apparatusGROB ERNST FA·Filed 1979·Granted Dec 29, 1981·9 cites·7 claims
- 0445US5765419AMethod and apparatus for a rolling of hollow articlesGROB ERNST FA·Filed 1996·Granted Jun 16, 1998·12 cites·13 claims
- 0541US4388818AMethod and apparatus for fabricating precision teethGROB ERNST FA·Filed 1981·Granted Jun 21, 1983·8 cites·11 claims
- 0639US4116032AMethod and apparatus for manufacturing straight or inclined toothed machine elements, especially spur gears by cold workingGROB ERNST·Filed 1977·Granted Sep 26, 1978·10 cites·17 claims
- 0728US5546781AProcess for the production of a toothed rack via cold forming, the rack produced thereby, and an apparatus for practicing the processGROB ERNST FA·Filed 1994·Granted Aug 20, 1996·2 cites·12 claims
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