Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
MH

Mark Howell — 12 Patents

EXExergyn: 2 patents #29 of 205Top 15%
Overall (All Time): #396,045 of 4,157,543Top 10%
12 Patents All Time
Mark Howell has been granted 12 US patents while listed as an inventor at Exergyn. The first was granted in 1980 and the most recent in September 2022. Mark Howell ranks #396,045 of 4,157,543 US inventors in our database (top 9.5%). Patent records list Mark Howell in Bristol, NM, GB.

Patents per Year

Patents granted per year, 1980 to 2022Bar chart with a peak of 2 patents in 2022.peak 21980: 1 patents19801987: 1 patents1993: 1 patents19931994: 1 patents1995: 1 patents19951996: 1 patents1997: 1 patents19971998: 1 patents2003: 1 patents20032006: 1 patents2022: 2 patents2022

Issued Patents All Time

Showing 1–12 of 12 patents

Patent #TitleCo-InventorsDate
11451186 Power generation source and distribution system Fredric L. Milder, Peter Page 2022-09-20
11245351 Power generation source and distribution system Fredric L. Milder, Peter Page 2022-02-08
7073981 Rock stabilizer Walter Baillie Wilson, Frans R. P. Pienaar 2006-07-11
6556136 Method and apparatus for use in location of conductors 2003-04-29
5754049 Method and apparatus for locating buried conductors in the presence of plural conductors 1998-05-19
5684403 Method and apparatus for the location of remote conductors by analysis of signals induced in an antenna array 1997-11-04
5547317 Mine support system Graham H. Clarke 1996-08-20
5454866 Grout composition Gregory M. Gilbert, Terrence M. McConnachie, Paul S. Kirsten 1995-10-03
5318387 Yieldable load support Frans R. P. Pienaar, Graham H. Clarke, Brian Peter Lewis, Richard G. King, Peter J. Cook 1994-06-07
5247835 Pile tester 1993-09-28
4672321 Method and apparatus for electromagnetically surveying a remote elongate conductor employing a detector assembly having plural electromagnetic transducer assemblies 1987-06-09
4220913 Apparatus for and methods of electromagnetic surveying of elongated underground conductors Lloyd H. Sole 1980-09-02