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

Harold V. Larson — 4 Patents

OLOlin: 2 patents #310 of 783Top 40%
LTLyondell Chemical Technology: 1 patents #85 of 123Top 70%
UGUnited States Gypsum: 1 patents #247 of 432Top 60%
ARAtlantic Richfield: 1 patents #1,004 of 1,068Top 95%
Houston, TX: #5,436 of 21,073 inventorsTop 30%
Texas: #33,915 of 125,132 inventorsTop 30%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Harold V. Larson has been granted 4 US patents while listed as an inventor at Olin. The first was granted in 1981 and the most recent in November 2023. Harold V. Larson ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Harold V. Larson in Houston, TX, US.

Patents per Year

Patents granted per year, 1981 to 2023Bar chart with a peak of 1 patents in 1981.peak 11981: 1 patents19811982: 1 patents19821987: 1 patents19872023: 1 patents2023

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11806701 Use of monopropylene glycol from purge streams in epoxidation catalyst preparation Ha H. Nguyen, Anthony S. Dearth 2023-11-07
4692535 Purification of propylene oxide Hyman D. Gillman 1987-09-08 $26,854,000
4328193 Process for removing radium from monocalcium phosphate solutions by centrifugation 1982-05-04
4282192 Process for producing a calcium sulfate product containing low amounts of radium 1981-08-04 $1,382,000