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USPTO Patent Rankings Data through Dec 31, 2025
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Trevor K. Markham — 10 Patents

UNUnknown: 6 patents #2,010 of 83,584Top 3%
San Antonio, TX: #499 of 5,017 inventorsTop 10%
Texas: #15,343 of 125,132 inventorsTop 15%
Overall (All Time): #481,000 of 4,157,543Top 15%
10 Patents All Time
Trevor K. Markham has been granted 10 US patents while listed as an inventor at Unknown. The first was granted in 1995 and the most recent in September 2016. Trevor K. Markham ranks #481,000 of 4,157,543 US inventors in our database (top 11.6%). Patent records list Trevor K. Markham in San Antonio, TX, US.

Patents per Year

Patents granted per year, 1995 to 2016Bar chart with a peak of 2 patents in 1999.peak 21995: 1 patents19951996: 1 patents19961999: 2 patents19992002: 1 patents20022004: 1 patents20042005: 2 patents20052015: 1 patents20152016: 1 patents2016

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDate
9453366 Window assemblies including bronze elements 2016-09-27
8955270 Window assemblies including bronze elements 2015-02-17
6923007 System and method of pumping liquified gas Glen M. Arnott 2005-08-02
6907900 Pressure regulated, safety bypass valved, bottle adapted fitting for lever actuated release of a regulated gas Glen M. Arnott 2005-06-21
6729860 Pneumatically driven liquified gas booster pump Glen M. Arnott 2004-05-04
6340034 Gas regulator with multiple regulated outlet ports Glen M. Arnott 2002-01-22
5979496 Adaptor for engaging a gas pressure source to a gas port 1999-11-09
5899221 Fluid pressure regulator Daniel Holt 1999-05-04
5522421 Fluid pressure regulator Daniel Holt 1996-06-04
5411053 Fluid pressure regulator Daniel Holt 1995-05-02