Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Peter J. Waldern — 5 Patents

PCProcess Combustion: 5 patents #2 of 7Top 30%
Bethel Park, PA: #53 of 258 inventorsTop 25%
Pennsylvania: #16,056 of 74,527 inventorsTop 25%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Peter J. Waldern has been granted 5 US patents while listed as an inventor at Process Combustion. The first was granted in 1992 and the most recent in August 1999. Peter J. Waldern ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Peter J. Waldern in Bethel Park, PA, US.

Patents per Year

Patents granted per year, 1992 to 1999Bar chart with a peak of 1 patents in 1992.peak 11992: 1 patents19921993: 1 patents19931997: 1 patents19971998: 1 patents19981999: 1 patents1999

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
5931663 Purge system for regenerative thermal oxidizer David A. Lewandowski, Peter B. Nutcher 1999-08-03
5707596 Method to minimize chemically bound nox in a combustion process David A. Lewandowski, Peter B. Nutcher 1998-01-13
5667374 Premix single stage low NOx burner Peter B. Nutcher 1997-09-16
5184951 Regenerative thermal oxidizer Peter B. Nutcher 1993-02-09
5161968 Regenerative thermal oxidizer Peter B. Nutcher 1992-11-10