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USPTO Patent Rankings Data through Dec 31, 2025
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David L. Larson — 14 Patents

Pfizer: 9 patents #561 of 5,153Top 15%
EAE.I. Du Pont De Nemours And: 2 patents #6,290 of 12,129Top 55%
Chagrin Falls, OH: #56 of 574 inventorsTop 10%
Ohio: #5,406 of 73,341 inventorsTop 8%
Overall (All Time): #332,869 of 4,157,543Top 9%
14 Patents All Time
David L. Larson has been granted 14 US patents while listed as an inventor at Pfizer. The first was granted in 1980 and the most recent in February 1991. David L. Larson ranks #332,869 of 4,157,543 US inventors in our database (top 8.0%). Patent records list David L. Larson in Chagrin Falls, OH, US.

Issued Patents All Time

Showing 1–14 of 14 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
4994457 Antiinflammatory compositions and methods Thomas C. Crawford, Joseph G. Lombardino 1991-02-19 $12,681,000
4960242 Asphalt distributor 1990-10-02
4874757 Antinflammatory compositions and methods Thomas C. Crawford, Stanley L. Keely, Joseph G. Lombardino, James J. Maciejko 1989-10-17 $14,006,000
4812455 Antiinflammatory compositions and methods Thomas C. Crawford, Stanley L. Keely, Joseph G. Lombardino, James J. Maciejko 1989-03-14 $12,858,000
4766117 Antiinflammatory compositions and methods Thomas C. Crawford, Stanley L. Keely, Joseph G. Lombardino, James J. Maciejko 1988-08-23 $27,439,000
4672061 Antiinflammatory compositions and methods Thomas C. Crawford, Stanley L. Keely, Joseph G. Lombardino, James J. Maciejko 1987-06-09 $55,418,000
4591595 2-guanidino-4-(2-methyl-4-imidazolyl)thiazoles in the treatment of rheumatoid arthritis 1986-05-27 $26,545,000
4579846 Antiinflammatory compositions and methods Thomas C. Crawford, Stanley L. Keely, Joseph G. Lombardino, James J. Maciejko 1986-04-01 $49,394,000
4564614 Antiinflammatory methods Thomas C. Crawford, Stanley L. Keely, Joseph G. Lombardino, James J. Maciejko 1986-01-14 $39,820,000
4559326 Antiinflammatory compositions and methods Thomas C. Crawford, Stanley L. Keely, Joseph G. Lombardino, James J. Maciejko 1985-12-17 $42,832,000
4543414 Liquid phase preparation of 2-substituted-2-oxazolines with cadmium salt catalysts 1985-09-24 $2,402,000
4354029 Preparation of 2-substituted-2-oxazolines with organic zinc salt catalysts Mark E. Kaiser 1982-10-12 $3,847,000
4352390 Precision silica cones for sand casting of steel and iron alloys 1982-10-05
4236568 Method of casting steel and iron alloys with precision cristobalite cores 1980-12-02