Inventor · disambiguated record
Richard W. Sprang
Also filed as: SPRANG RICHARD · SPRANG RICHARD W
4 granted patents·148 citations·filing 1985–1991
81Inventor score
Top patents by PatentIndex Score
4 records- 0190US4819279AVacuum toilet systemSEALAND TECHNOLOGY INC·Filed 1987·Granted Apr 11, 1989·66 cites·10 claims
- 0275US5345618AVacuum toilet systemSEALAND TECHNOLOGY INC·Filed 1991·Granted Sep 13, 1994·39 cites·8 claims
- 0366US4604763ASeal means for a flush valve assemblyCLEVEPAK CORP·Filed 1985·Granted Aug 12, 1986·32 cites·4 claims
- 0447US4854827ASanitary pump stationSEALAND TECHNOLOGY INC·Filed 1987·Granted Aug 8, 1989·11 cites·22 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →