Learn more

BELLOFRAM CORP

Overview
  • Total Patents
    24
About

BELLOFRAM CORP has a total of 24 patent applications. Its first patent ever was published in 1975. It filed its patents most often in United States, EPO (European Patent Office) and South Africa. Its main competitors in its focus markets engines, pumps and turbines, machines and mechanical elements are KURT SCHOENE, WILDEN PUMP AND ENGINEERING LL and GRAHAM GEORGE.

Patent filings in countries

World map showing BELLOFRAM CORPs patent filings in countries
# Country Total Patents
#1 United States 13
#2 EPO (European Patent Office) 3
#3 South Africa 3
#4 Australia 2
#5 Brazil 2
#6 Canada 1

Patent filings per year

Chart showing BELLOFRAM CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Athanassiu Christos 12
#2 St Laurent Jr Wilfred H 6
#3 Laurent Wilfred St 4
#4 Benson Richard A 3
#5 St Laurent Wilfred 3
#6 St Laurent Wilfred H Jr 3
#7 Comstock Donald W 1
#8 Marchetti Peter B 1
#9 Smith Daniel E 1
#10 Athanassiu Christos A 1

Latest patents

Publication Filing date Title
US4905720A Current-to-pressure transducer with enhanced performance features
US4729398A Current-to-pressure transducers
US4674526A Switching valve
US4705458A Fluid operated pump
AU1711283A Fluid motor
US4466455A Rolling diaphragm vacuum control with check valve
US4390036A Rolling diaphragm vacuum control
US4244589A Sealed shaft of reduced diameter
US4253675A Improvements of sealed shafts
US4208060A Sealed shaft
US4229010A Self-aligning shaft seal
US4219042A Pneumatic relay
US4263838A Pneumatic positioner
US3969991A Rolling diaphragm and rolling diaphragm devices