William E. Brown has been granted 24 US patents. The first was granted in 1980 and the most recent in September 2021. William E. Brown ranks #168,038 of 4,157,543 US inventors in our database (top 4.0%). Patent records list William E. Brown in Durham, NC, US.
Patents per Year Patents granted per year, 1980 to 2021 Bar chart with a peak of 5 patents in 1997. peak 5 1980: 2 patents 1980 1986: 1 patents 1987: 1 patents 1987 1988: 1 patents 1989: 1 patents 1989 1995: 1 patents 1996: 1 patents 1996 1997: 5 patents 1999: 1 patents 1999 2004: 1 patents 2014: 3 patents 2014 2015: 1 patents 2018: 1 patents 2018 2020: 1 patents 2021: 3 patents 2021
Issued Patents All Time
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Showing 1–24 of 24 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
11112210 Moldable hand grips for firearms — 2021-09-07
11092402 Angled action firearm — 2021-08-17
10968646 Roofing safety line engagement assembly — 2021-04-06
10697730 Moldable hand grips for firearms — 2020-06-30
9924862 Ophthalmoscope Michael E. Sullivan , Anthony Corcoran , Derek Swan 2018-03-27
9060845 Systems and methods for disruption of an eye lens Marcia Angela Van Valen , Daniel S. Durrie 2015-06-23
$1,456,000
D713538 Disposable laser handpiece Marcia Angela Van Valen 2014-09-16
8827990 Methods for treating eye conditions Marcia Angela Van Valen 2014-09-09
$1,704,000
D701971 Disposable laser handpiece Marcia Van Valen 2014-04-01
6733577 Liquid polish — 2004-05-11
5957503 Quick disconnect safety shield — 1999-09-28
5678864 Quick disconnect safety shield — 1997-10-21
D383197 Safety shield for a joint formed in a piping system — 1997-09-02
D381406 Safety shield for the end cap in a piping system — 1997-07-22
5634591 Sliding joint system for railway tracks, allowing a great longitudinal excursion, particularly for suspension bridges — 1997-06-03
5615436 Suspension bridge framework — 1997-04-01
5568667 Structure to interconnect two branches of a suspension bridge framework in correspondence of a pier supporting the catenary — 1996-10-29
5441418 Thermochromic drawing device Charles W. Dietterich , Richard M. Mandle 1995-08-15
4869767 Process for placing single or multiple patterned layers of conductive material on a substrate Richard A. Robinson 1989-09-26
4718518 Step ladder — 1988-01-12
D288934 Clutch spring retainer plate — 1987-03-24
D283819 Clutch plate alignment hub — 1986-05-13
4233078 Refractory composition for forming a monolithic structure — 1980-11-11
$8,015,000
4204153 Method of determining the open circuit voltage of a battery in a closed circuit — 1980-05-20
$5,959,000