Inventor · disambiguated record
Birk Cliff Sorensen
Also filed as: SORENSEN BIRK · SORENSEN BIRK C · SORENSEN BIRK CLIFF
5 granted patents·2 pending applications·150 citations·filing 1987–2014
83Inventor score
Top patents by PatentIndex Score
7 records- 0194US8141400B2Keypad locksetSORENSEN BIRK CLIFF·Filed 2010·Granted Mar 27, 2012·90 cites·12 claims
- 0289US8176761B2Keypad locksetSORENSEN BIRK CLIFF·Filed 2011·Granted May 15, 2012·19 cites·5 claims
- 0349US5467855ARamp weight-reducing assemblyEMTEK PRODUCTS INC·Filed 1994·Granted Nov 21, 1995·21 cites·7 claims
- 0443US5267457ADouble latch dead bolt lock operating mechanismJURALCO INC·Filed 1992·Granted Dec 7, 1993·15 cites·11 claims
- 0543US2015015003A1Concealed fastener locksetTSAI PING HSIEN·Filed 2013·Application pending·0 cites
- 0638US2014159392A1Concealed fastener locksetTSAI PING HSIEN·Filed 2014·Application pending·0 cites
- 0721US4845808ARamp handleJURALCO INC·Filed 1987·Granted Jul 11, 1989·5 cites·18 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →