Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Keith E. Kropf — 13 Patents

MAMaytag: 8 patents #60 of 601Top 10%
EAEaton: 1 patents #1,900 of 3,708Top 55%
GE: 1 patents #19,940 of 36,430Top 55%
Key Largo, FL: #2 of 132 inventorsTop 2%
Florida: #4,024 of 67,251 inventorsTop 6%
Overall (All Time): #362,438 of 4,157,543Top 9%
13 Patents All Time
Keith E. Kropf has been granted 13 US patents while listed as an inventor at Maytag. The first was granted in 1992 and the most recent in December 2019. Keith E. Kropf ranks #362,438 of 4,157,543 US inventors in our database (top 8.7%). Patent records list Keith E. Kropf in Key Largo, FL, US.

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
10494960 Engine valve lifter Leighton Roberts 2019-12-03 $138,270,000
10032446 Underwater voice communication devices and associated methods 2018-07-24
9949022 Underwater communication systems, underwater speakers, underwater microphone assemblies and methods 2018-04-17
8347953 Inline monitoring package for electrical submersible pump Jesus Elizondo 2013-01-08 $16,356,000
7615038 Disposable diaper with sealable enclosure and method for sealing and disposing of the same Andrew E. Kropf 2009-11-10
7013517 Rotating/tipping agitator for a washing machine 2006-03-21 $4,285,000
6886372 Vertical axis washing machine including rotating/tipping agitator 2005-05-03 $4,306,000
6220063 Drive system for clothes washer Daniel F. Wunderlich, John F. Broker, John E. Thomas 2001-04-24 $9,409,000
5440903 Washing machine agitator Richard P. Bergeson, Luann E. Fitzpatrick 1995-08-15 $3,230,000
5440086 Unbalance switch mechanism 1995-08-08 $10,147,000
D357561 Washing machine agitator Richard P. Bergeson, Luann E. Fitzpatrick 1995-04-18
5303997 Slidable and vertically adjustable refrigerator/freezer basket and mounting arrangement therefor 1994-04-19 $13,795,000
5174618 Door latch assembly 1992-12-29 $12,347,000