Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Stephen D. Krefman — 4 Patents

WHWhirlpool: 4 patents #1,045 of 3,654Top 30%
Paw Paw, MI: #23 of 62 inventorsTop 40%
Michigan: #22,248 of 86,293 inventorsTop 30%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Stephen D. Krefman has been granted 4 US patents while listed as an inventor at Whirlpool. The first was granted in 2009 and the most recent in October 2015. Stephen D. Krefman ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Stephen D. Krefman in Paw Paw, MI, US.

Patents per Year

Patents granted per year, 2009 to 2015Bar chart with a peak of 2 patents in 2010.peak 22009: 1 patents20092010: 2 patents20102015: 1 patents2015

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
9164867 Network for communicating information related to a consumable to an appliance Matthew P. Ebrom, Wallace J. Elston, III, Mark E. Glotzbach, Layne E. Heilman, Anthony E. Jenkins +3 more 2015-10-20 $35,579,000
7798865 Service supply module and adapter for a consumer electronic device Richard A. McCoy 2010-09-21 $20,757,000
7765332 Functional adapter for a consumer electronic device Richard A. McCoy, Ameresh B. Viswanathan 2010-07-27 $46,676,000
7513132 Non-aqueous washing machine with modular construction Tremitchell Wright, Daniel C. Conrad, Joel A. Luckman, Richard A. Sunshine, Andrew Leitert 2009-04-07 $16,107,000