Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Ralph E. Schlender — 2 Patents

PPPolymer Packaging: 2 patents #4 of 7Top 60%
Highland, CA: #22 of 78 inventorsTop 30%
California: #187,151 of 386,348 inventorsTop 50%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Ralph E. Schlender has been granted 2 US patents while listed as an inventor at Polymer Packaging. The first was granted in 1993 and the most recent in March 1996. Ralph E. Schlender ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Ralph E. Schlender in Highland, CA, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5497884 Self opening dual tab merchandising bag Robert B. DeMatteis 1996-03-12
5248040 Self opening dual tab merchandising bag Robert B. DeMatteis 1993-09-28