Frederick G. Eis — 1 Patent at Amstar

Frederick G. Eis has been granted 1 US patent while listed as an inventor at Amstar. All of these patents were granted in 1981. Frederick G. Eis ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Frederick G. Eis in San Ramon, CA, US.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
4278541	Separator employing an annular vertical feedwell with associated concentric annular baffle plate and method of using same to separate solids from liquids	Oren V. Bonney, Willard A. Sackett	1981-07-14	$1,752,000

Frederick G. Eis — 1 Patent

Issued Patents All Time

Patent Widget