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

Werner Bohnstedt — 7 Patents

DADaramic: 5 patents #16 of 57Top 30%
GGGrace Gmbh: 1 patents #9 of 37Top 25%
WCW.R. Grace & Co.-Conn.: 1 patents #543 of 1,045Top 55%
Henstedt-Ulzburg, DE: #8 of 94 inventorsTop 9%
Overall (All Time): #680,018 of 4,157,543Top 20%
7 Patents All Time
Werner Bohnstedt has been granted 7 US patents while listed as an inventor at Daramic. The first was granted in 1990 and the most recent in September 2008. Werner Bohnstedt ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list Werner Bohnstedt in Henstedt-Ulzburg, DE.

Patents per Year

Patents granted per year, 1990 to 2008Bar chart with a peak of 2 patents in 1998.peak 21990: 1 patents19901993: 1 patents19931998: 2 patents19982000: 2 patents20002008: 1 patents2008

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7425387 Separator for a lead storage battery 2008-09-16
6124059 Separator for sealed lead accumulators Jörg Deiters, Klaus Heinrich Ihmels, Jurgen Ruhoff 2000-09-26
6120939 Meltblown fiber battery separator J. Kevin Whear, Eric Peters 2000-09-19
5776630 Separator with longitudinal and transverse ribs for use in accumulators 1998-07-07
5773079 Process for repairing battery separators Klaus Heinrich Ihmels, Karsten Fischer, Jurgen Ruhoff 1998-06-30
5221587 Lead/sulphuric acid storage battery Christian Radel 1993-06-22 $4,200,000
4927722 Separator for starter batteries Werner Lindenstruth 1990-05-22