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USPTO Patent Rankings Data through Dec 31, 2025
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David E. Schafer — 26 Patents

KEKnowles Electronics: 15 patents #17 of 325Top 6%
MTMonsanto Technology: 11 patents #369 of 1,657Top 25%
Creve Coeur, MO: #14 of 236 inventorsTop 6%
Missouri: #542 of 23,789 inventorsTop 3%
Overall (All Time): #150,017 of 4,157,543Top 4%
26 Patents All Time
David E. Schafer has been granted 26 US patents while listed as an inventor at Knowles Electronics. The first was granted in 1980 and the most recent in November 2023. David E. Schafer ranks #150,017 of 4,157,543 US inventors in our database (top 3.6%). Patent records list David E. Schafer in Creve Coeur, MO, US.

Issued Patents All Time

Showing 1–25 of 26 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11825266 Dielectric comb for MEMS device Mohsin Nawaz, Shubham Shubham, Michael Syskind PEDERSEN, Claus Erdmann Fürst, Mohammad Shajaan +1 more 2023-11-21 $12,065,000
8824726 Low axial vibration receiver armature and assembly Thomas E. Miller, Clifford Ryan Grounds, Henry Nepomuceno, George Patterson 2014-09-02 $17,409,000
8494209 Low axial vibration receiver armature and assembly Thomas E. Miller, Clifford Ryan Grounds, Henry Nepomuceno, George Patterson 2013-07-23
7921540 System of component s usable in the manufacture of an acoustic transducer Mekell Jiles 2011-04-12
7925041 Method of making a linkage assembly for a transducer and the like Mekell Jiles 2011-04-12
7860264 Acoustic assembly for a transducer Mekell Jiles, Anthony D. Minervini, Hanny Sunarto, Thomas E. Miller, Daniel Warren 2010-12-28
7412763 Method of making an acoustic assembly for a transducer Mekell Jiles, Anthony D. Minervini, Hanny Sunarto, Thomas E. Miller, Daniel Warren 2008-08-19
7415125 Apparatus and method for creating acoustic energy in a receiver assembly with improved diaphragms-linkage arrangement Daniel Warren, Stephen C. Thompson 2008-08-19
7366317 Apparatus for creating motion amplification in a transducer with improved linkage structure Thomas E. Miller 2008-04-29
7336797 Apparatus and method for generating acoustic energy in a receiver assembly Stephen C. Thompson, Daniel Warren 2008-02-26
7302748 Linkage assembly for an acoustic transducer Mekell Jiles 2007-12-04
7203334 Apparatus for creating acoustic energy in a balanced receiver assembly and manufacturing method thereof Mekell Jiles 2007-04-10
7164776 Vibration balanced receiver Thomas E. Miller, August F. Mostardo, Elmer V. Carlson 2007-01-16
5870482 Miniature silicon condenser microphone Peter V. Loeppert 1999-02-09
5740261 Miniature silicon condenser microphone Peter V. Loeppert 1998-04-14
4640702 2-chloro-4-trifluoromethyl-thiazolecarbothioic acids useful as herbicidal safeners Raymond C. Grabiak, Robert K. Howe 1987-02-03 $16,988,000
4605431 Compositions and methods for reducing herbicidal injury Albert J. Czajkowski 1986-08-12 $11,017,000
4594093 Triester derivatives of N-phosphonomethylthionoglycine as herbicides James A. Sikorski 1986-06-10 $16,874,000
4507143 Organothiophosphorous compounds useful as antidotes for thiocarbamate herbicides Albert J. Czajkowski 1985-03-26 $3,921,000
4379716 Compositions and methods for reducing herbicidal injury Albert J. Czajkowski 1983-04-12 $17,268,000
4347366 2-(Pyridylthio)pyridine-N-oxides John J. D'Amico 1982-08-31 $4,182,000
4243406 5-Aryl-4-isoxazolecarboxylate-safening agents Lawrence H. Brannigan, John E. Franz 1981-01-06 $3,295,000
4239527 2-(Pyridylthio)pyridine-N-oxides John J. D'Amico 1980-12-16 $3,327,000
4231786 Compositions and methods for reducing herbicidal injury Albert J. Czajkowski 1980-11-04
4185989 3-Phenacyl phthaldide safening agents John A. Houbion 1980-01-29 $5,715,000