Inventor · disambiguated record
Frederick S. Lewis
Also filed as: LEWIS FREDERICK · LEWIS FREDERICK S
5 granted patents·83 citations·filing 1985–1994
82Inventor score
Files withINGERSOLL RAND CO5
Top patents by PatentIndex Score
5 records- 0171US4808265AMethod of washing pulp in a pressure pulp washer adding two washing liquidsINGERSOLL RAND CO·Filed 1987·Granted Feb 28, 1989·17 cites·3 claims
- 0263US5281343AVacuum filtration system and method of filtering pulp fibers from pulp slurry using the sameINGERSOLL RAND CO·Filed 1993·Granted Jan 25, 1994·24 cites·14 claims
- 0358US4894121APressure pulp washerINGERSOLL RAND CO·Filed 1988·Granted Jan 16, 1990·10 cites·4 claims
- 0455US5480545ACross braced vacuum washerINGERSOLL RAND CO·Filed 1994·Granted Jan 2, 1996·13 cites·5 claims
- 0550US4643439ASeal for relatively rotatable partsINGERSOLL RAND CO·Filed 1985·Granted Feb 17, 1987·19 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →