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Harry E. Stewart — 5 Patents

POPowsus: 5 patents #1 of 2Top 50%
Malvern, PA: #149 of 529 inventorsTop 30%
Pennsylvania: #16,056 of 74,527 inventorsTop 25%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Harry E. Stewart has been granted 5 US patents while listed as an inventor at Powsus. The first was granted in 1991 and the most recent in May 2004. Harry E. Stewart ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Harry E. Stewart in Malvern, PA, US.

Patents per Year

Patents granted per year, 1991 to 2004Bar chart with a peak of 1 patents in 1991.peak 11991: 1 patents19911995: 1 patents19951998: 1 patents19981999: 1 patents19992004: 1 patents2004

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
6736989 Reduction of HF Donald B. MacElwee 2004-05-18
5909776 Fire extinguishers Donald B. MacElwee 1999-06-08
5833874 Fire extinguishing gels and methods of preparation and use thereof Donald B. MacElwee 1998-11-10
5466386 Fire extinguishing compositions Donald B. MacElwee 1995-11-14
5055208 Fire extinguishing compositions Donald B. MacElwee 1991-10-08

Frequent Collaborators

Donald B. MacElwee5 shared

Nearby-Ranked Inventors

Joseph L. Mann5
Terry Richard Linn5
Ikuo DEGUCHI5
Swapnil Kumar5
Zachary W. Gyugyi5
Xiaoxue CHEN5
Mohankumar Krishnan VALIYAMBATH5
Baoquan Tan5
Jack Long5