Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Wei-Ching Yu — 9 Patents

CECelgard: 4 patents #40 of 126Top 35%
HCHoechst Celanese: 3 patents #209 of 871Top 25%
LSL'Oreal S.A.: 1 patents #292 of 559Top 55%
Charlotte, NC: #463 of 4,868 inventorsTop 10%
North Carolina: #5,916 of 45,564 inventorsTop 15%
Overall (All Time): #535,341 of 4,157,543Top 15%
9 Patents All Time
Wei-Ching Yu has been granted 9 US patents while listed as an inventor at Celgard. The first was granted in 1996 and the most recent in December 2007. Wei-Ching Yu ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list Wei-Ching Yu in Charlotte, NC, US.

Patents per Year

Patents granted per year, 1996 to 2007Bar chart with a peak of 2 patents in 1997.peak 21996: 1 patents19961997: 2 patents19971999: 1 patents19992000: 2 patents20002002: 1 patents20022005: 1 patents20052007: 1 patents2007

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
7311899 Compositions comprising at least one silicone, at least one compound comprising at least one ester group, and at least one copolymer, and methods for using the same 2007-12-25
6878226 Continuous methods of making microporous battery separators 2005-04-12
6346350 Structurally stable fusible battery separators and method of making same Ronald W. Call, Pierre C. Cook, Shawn E. Hux, Khuy V. Nguyen 2002-02-12
6132654 Ultra-thin, single-ply battery separator 2000-10-17
6057060 Ultra-thin, single-ply battery separator 2000-05-02
5952120 Method of making a trilayer battery separator Shawn E. Hux 1999-09-14
5691077 Shutdown, trilayer battery separator 1997-11-25
5667911 Methods of making cross-ply microporous membrane battery separator, and the battery separators made thereby Carlton F. Dwiggins 1997-09-16
5565281 Shutdown, bilayer battery separator Margaret W. Geiger 1996-10-15