Learn more

GRAVER CO

Overview
  • Total Patents
    126
About

GRAVER CO has a total of 126 patent applications. Its first patent ever was published in 1982. It filed its patents most often in United States, Canada and EPO (European Patent Office). Its main competitors in its focus markets chemical engineering, environmental technology and foods and drinks are CPPE CARBON PROCESS & PLANT ENG S A, POLARIS SRL and ANHUI TIANSHUN ENV PROT EQUIPMENT CO LTD.

Patent filings in countries

World map showing GRAVER COs patent filings in countries

Patent filings per year

Chart showing GRAVER COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Salem Eli 50
#2 Kunin Robert 37
#3 Davis Thomas A 11
#4 Butterworth Donald J 8
#5 Bozenmayer Kurt 7
#6 Soriente Alfonse J 7
#7 O'Brien Michael J 5
#8 Libutti Bruce L 4
#9 Ryan Leo 4
#10 Flores A Roland 4

Latest patents

Publication Filing date Title
US5667679A Filter having a filter element quick-disconnect mount
CA2177236A1 Dry blended filter beds
US5552056A Filter element having an ion exchange yarn winding layer
US5624965A Arylenedialkylidene polymers for high performance ion exchange membranes
US5601704A Automatic feedback control system for a water treatment apparatus
AU7241194A Ion exchange resin regenerant waste recovery and recycling via bipolar membranes
US5376278A Filter and a method for separating charged particles from a liquid stream
US5346624A Method and apparatus for treatment of aqueous solutions
US5207905A Baffle assembly for air and water backwash of a media filter
US5196122A External regeneration system for mixed bed ion exchangers
US5212205A Regeneration of deep bed condensate polishers
US5192446A Cation exchange resins having an enhanced capacity for iron oxides
US5250159A Bipolar membrane stack and method for producing acid and monovalent base from impure salt
CA2043717A1 Recovery of sodium hydroxide and aluminum hydroxide from etching waste
US5207879A Bipolar membrane stack and method for production of low chloride sodium hydroxide
US5126052A Condensate polishing system incorporating a membrane filter
US5017241A Backwash method and apparatus
US5114596A Backwash method and apparatus
US5049233A Recovery of sodium hydroxide and aluminum hydroxide from etching waste
US5022997A Method for treating aqueous solutions