Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
HP

H. Larry Penberthy

Seattle, WA: #8,251 of 21,776 inventorsTop 40%
Washington: #27,877 of 76,902 inventorsTop 40%
Overall (All Time): #1,683,644 of 4,157,543Top 45%
3 Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4404129 Sequestering of radioactive waste Dennis J. Hotaling 1983-09-13
4299611 Method and apparatus for converting hazardous material to a relatively harmless condition 1981-11-10
4195981 Molten glass homogenizer and method of homogenizing glass 1980-04-01