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TONKS BIRMINGHAM LTD

Overview
  • Total Patents
    34
About

TONKS BIRMINGHAM LTD has a total of 34 patent applications. Its first patent ever was published in 1923. It filed its patents most often in United Kingdom. Its main competitors in its focus markets civil engineering, control and mechanical elements are MURAKOSHI MFG CORP, SYSTEMES D AUTOMATISMES FERMET and ESCO METALLBAUBESCHLAG HANDEL GMBH.

Patent filings in countries

World map showing TONKS BIRMINGHAM LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 34

Patent filings per year

Chart showing TONKS BIRMINGHAM LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Herbert Kenneth 18
#2 Millward Ronald Frederick 5
#3 Rankin John 4
#4 Jervis Leonard Henry 3
#5 Evans David Howard 1

Latest patents

Publication Filing date Title
GB1348887A Door closer devices
GB1259833A Window hinges
GB1245089A Door handles
GB1247848A Door or panel fittings
GB1244482A Lock or latch mounting means for doors of concrete
GB1234777A Shelf support means
GB1163634A Door Fastener Assemblies.
GB1221422A Door closer devices
GB1218565A Hydraulic dampers and methods of making them
GB1220217A Latch assemblies
GB1207957A Bolt assemblies
GB1132619A Rising or falling hinges
GB1128751A Door closers
GB1093511A Hinge connections for doors or panels
GB1093512A Glass doors or panels
GB1093513A Glass door or panel assemblies
GB1005579A Dash pots
GB997269A Door closers
GB1014354A Means for connecting a door to a door closer
GB951152A Locking means for glass doors