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USPTO Patent Rankings Data through Dec 31, 2025
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Robert E. Casparian — 7 Patents

HRHanover Research: 7 patents #3 of 6Top 50%
Boonton, NJ: #38 of 178 inventorsTop 25%
New Jersey: #12,481 of 69,400 inventorsTop 20%
Overall (All Time): #680,018 of 4,157,543Top 20%
7 Patents All Time
Robert E. Casparian has been granted 7 US patents while listed as an inventor at Hanover Research. The first was granted in 1981 and the most recent in December 1991. Robert E. Casparian ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list Robert E. Casparian in Boonton, NJ, US.

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
5076895 Process and apparatus for recovering clean water and solids from aqueous solids using mechanical vapor recompression evaporators Charles Greenfield 1991-12-31
4857144 Apparatus for improved top feed distribution for falling film evaporator 1989-08-15
4608120 Apparatus for removing light oil from solids Charles Greenfield, Anthony J. Bonanno 1986-08-26
4518458 Process for removing light oil from solids Charles Greenfield, Anthony J. Bonanno 1985-05-21
4336101 Process and apparatus for recovering clean water and solids from aqueous solids Charles Greenfield, Anthony J. Bonanno 1982-06-22
4289578 Process and apparatus for recovering clean water and solids from aqueous solids Charles Greenfield, Anthony J. Bonanno 1981-09-15
4270974 Process and apparatus for recovering clean water and solids from aqueous solids Charles Greenfield, Anthony J. Bonanno 1981-06-02