John Abraham — 14 Patents at Wts

John Abraham has been granted 14 US patents while listed as an inventor at Wts. The first was granted in 1989 and the most recent in December 2025. John Abraham ranks #332,869 of 4,157,543 US inventors in our database (top 8.0%). Patent records list John Abraham in Minneapolis, MN, US.

Issued Patents All Time

Showing 1–14 of 14 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12486990	Solar heating for refrigeration and fluid heating devices	Brian Plourde, Andrew Gikling, Richard Pakonen, Douglas Plourde	2025-12-02
11946886	Fluid heating system	Brian Plourde, Douglas Plourde, Richard Pakonen, Andy Gikling, Noel Naughton	2024-04-02
11920801	Digital fluid heating system	Brian Plourde, Andrew Gikling, Richard Pakonen, Douglas Plourde	2024-03-05
11361743	Megaphone having additional lighting or audible features	Sofia Ann Abraham	2022-06-14
11255804	Method of calculating pathogen inactivation for a fluid heating system	Brian Plourde, Douglas Plourde, Richard Pakonen	2022-02-22
10989420	Digital fluid heating system	Brian Plourde, Andrew Gikling, Richard Pakonen, Douglas Plourde	2021-04-27
10890645	Dual axis tracking method	Brian Plourde, Douglas Plourde, Richard Pakonen, Andy Gikling	2021-01-12
10495720	Control valve assembly for a fluid heating system	Brian Plourde, Douglas Plourde, Richard Pakonen	2019-12-03
10168412	Dual axis tracking device	Brian Plourde, Douglas Plourde, Richard Pakonen, Andy Gikling	2019-01-01
9482204	Rotor blade for vertical axis wind turbine	Brian Plourde	2016-11-01
6385790	Portable toilet	Michael M. Anthony	2002-05-14
5343838	Dual radius rotor for pre-mixed-charge rotary engine combustion	—	1994-09-06
5022366	Rotary engine with dual spark plugs and fuel injectors	Frediano V. Bracco	1991-06-11	$13,312,000
4889091	Rotary valve for natural gas rotary engine	Murray Berkowitz	1989-12-26	$6,945,000

John Abraham — 14 Patents

Issued Patents All Time

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