Inventor · disambiguated record
Alfred Kais
Also filed as: KAIS ALFRED
13 granted patents·136 citations·filing 1988–2000
92Inventor score
Top patents by PatentIndex Score
13 records- 0177US5590833AExpansion joint for part of a railway trackBUTZBACHER WEICHENBAU GMBH·Filed 1993·Granted Jan 7, 1997·21 cites·8 claims
- 0271US6543728B1Cross frogBUTZBACHER WEICHENBAU GMBH·Filed 2000·Granted Apr 8, 2003·9 cites·13 claims
- 0370US6177205B1Process for producing a permanent way component and such a componentBUTZBACHER WEICHENBAU GMBH·Filed 1997·Granted Jan 23, 2001·19 cites·18 claims
- 0455US5195703ADevice for locking a switch blade with a stock railBUTZBACHER WEICHENBAU GMBH·Filed 1991·Granted Mar 23, 1993·17 cites·13 claims
- 0547US5605281ARail support systemBUTZBACHER WEICHENBAU GMBH·Filed 1993·Granted Feb 25, 1997·9 cites·12 claims
- 0646US5522570ARail sectionBUTZBACHER WEICHENBAU GMBH·Filed 1993·Granted Jun 4, 1996·9 cites·20 claims
- 0744US6068196AExpansion joint for part of a railway trackBUTZBACHER WEICHENBAU GMBH·Filed 1996·Granted May 30, 2000·13 cites·20 claims
- 0840US4925135AArrangement for controlled guidance of a wheel axle or of a bogie of a rail vehicle passing over pointsBUTZBACHER WEICHENBAU GMBH·Filed 1988·Granted May 15, 1990·12 cites·12 claims
- 0939US5184791AFrog tip that can be shifted relative to the wing railsBWG BUTZBACHER WEICHENBAU GMBA·Filed 1991·Granted Feb 9, 1993·8 cites·13 claims
- 1038US5645216ABearing for a part of a railroad trackBUTZBACHER WEICHENBAU GMBH·Filed 1993·Granted Jul 8, 1997·6 cites·21 claims
- 1138US5222700ADevice for locking a switch bladeBUTZBACHER WEICHENBAU GMBH·Filed 1991·Granted Jun 29, 1993·7 cites·14 claims
- 1238US5158414ARail attaching device permitting longitudinal rail displacementBUTZBACHER WEICHENBAU GMBH·Filed 1991·Granted Oct 27, 1992·6 cites·14 claims
- 1324US6270018B1Track or method for aligning a rail track sectionBUTZBACHER WEICHENBAU GMBH·Filed 1998·Granted Aug 7, 2001·0 cites·12 claims
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