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

James D. Buchner — 4 Patents

EXExtrel: 1 patents #4 of 9Top 45%
Pittsburgh, PA: #2,026 of 7,570 inventorsTop 30%
Pennsylvania: #19,360 of 74,527 inventorsTop 30%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
James D. Buchner has been granted 4 US patents while listed as an inventor at Extrel. The first was granted in 1990 and the most recent in July 2021. James D. Buchner ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list James D. Buchner in Pittsburgh, PA, US.

Patents per Year

Patents granted per year, 1990 to 2021Bar chart with a peak of 1 patents in 1990.peak 11990: 1 patents19902017: 1 patents20172020: 1 patents20202021: 1 patents2021

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
11059017 Halogen selective detection gas chromatography for the on-line analysis and control of selective oxidation chemical production processes James D. Buchner, Sr. 2021-07-13
10852296 Micro-sampling for cell, tissue, and micro-organism monitoring Ross C. Willoughby 2020-12-01
9719890 Micro-sampling for aquatic chemical analysis Ross C. Willoughby 2017-08-01
4977785 Method and apparatus for introduction of fluid streams into mass spectrometers and other gas phase detectors Ross C. Willoughby 1990-12-18