Inventor · disambiguated record
Fred F. Chellis
Also filed as: CHELLIS FRED F · CHELLIS FRED FREEMAN
6 granted patents·175 citations·filing 1976–1984
85Inventor score
Top patents by PatentIndex Score
6 records- 0189US4543793AElectronic control of cryogenic refrigeratorsHELIX TECH CORP·Filed 1984·Granted Oct 1, 1985·92 cites·21 claims
- 0279US4244192ARefrigeration system and reciprocating compressor therefor with pressure stabilizing sealHELIX TECH CORP·Filed 1978·Granted Jan 13, 1981·32 cites·5 claims
- 0370US4180984ACryogenic apparatus having means to coordinate displacer motion with fluid control means regardless of the direction of rotation of the drive shaftHELIX TECH CORP·Filed 1977·Granted Jan 1, 1980·27 cites·13 claims
- 0454US4118943ARefrigeration system with magnetic linkageCRYOGENIC TECHNOLOGY INC·Filed 1976·Granted Oct 10, 1978·11 cites·15 claims
- 0540US4466251AFluid actuator for cryogenic valveHELIX TECH CORP·Filed 1982·Granted Aug 21, 1984·9 cites·8 claims
- 0635US4158293ARefrigeration system with magnetic linkageCRYOGENIC TECHNOLOGY INC·Filed 1977·Granted Jun 19, 1979·4 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →