John E. Ehrreich — 15 Patents at Ercon

John E. Ehrreich has been granted 15 US patents while listed as an inventor at Ercon. The first was granted in 1981 and the most recent in January 2008. John E. Ehrreich ranks #307,048 of 4,157,543 US inventors in our database (top 7.4%). Patent records list John E. Ehrreich in Wayland, MA, US.

Issued Patents All Time

Showing 1–15 of 15 patents

Patent #	Title	Co-Inventors	Date
7320295	Squirrel house with predator protection	—	2008-01-22
7069877	Squirrel house	—	2006-07-04
5843342	Polymer compositions containing chlorided conductive particles	—	1998-12-01
5305644	Force sensor	—	1994-04-26
5207950	Polymer composition containing chlorided conductive particles	—	1993-05-04
5194205	Process for forming a force sensor	—	1993-03-16
4836955	Conductive compositions	—	1989-06-06
4786437	One-component, particle-filled compositions	—	1988-11-22
4716081	Conductive compositions and conductive powders for use therein	—	1987-12-29
4683082	One-component, particle-filled compositions	—	1987-07-28
4592961	Particle filled flexible coating composition of aromatic polyester and vinylidene chloride copolymer	—	1986-06-03
4435214	Conductive compositions	—	1984-03-06
4407674	Novel electroconductive compositions and powder for use therein	—	1983-10-04
4319920	Novel electroconductive compositions and powder for use therein	—	1982-03-16
D259777	Self-watering plant tray	—	1981-07-07

John E. Ehrreich — 15 Patents

Issued Patents All Time

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