Roger A. Johnson
18Patents
11h-index
28Co-inventors
72Inventor score
Filing activity: May 8, 1978 → Apr 8, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5362390A | Shut-off valve for spin-on filters | Emerging Cross-Sectional Technologies | 93 | Expired |
| US6012883A | Hybrid lay-up tool | Emerging Cross-Sectional Technologies | 91 | Expired |
| US6168358A | Hybrid lay-up tool | Emerging Cross-Sectional Technologies | 81 | Expired |
| US5671912A | Method & apparatus for providing low speed safety braking for a hoist system | Performing Operations; Transporting | 26 | Expired |
| US6485902B2 | Use of bacteriophages for control of escherichia coli O157 | Chemistry; Metallurgy | 26 | Expired |
| US4644594A | Patient transport device | Human Necessities | 19 | Expired |
| US4804889A | Electrode feedthrough assembly for arc discharge lamp | Electricity | 19 | Expired |
| US4942330A | Lamp assembly utilizing shield and ceramic fiber mesh for containment | Electricity | 19 | Expired |
| US6759002B1 | Method for making a composite | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5795756A | Method and compounds for the inhibition of adenylyl cyclase | Chemistry; Metallurgy | 15 | Expired |
| US4197404A | Preparation of .gamma.-quinacridone pigment | Chemistry; Metallurgy | 13 | Expired |
| US4518153A | Safety mechanism for hoisting drums | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6453531B1 | Automotive window assembly tool | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6689796B1 | Rodenticidal composition | Human Necessities | 4 | Expired |
| US6132957A | Method and compounds for the inhibition of adenylyl cyclase | Chemistry; Metallurgy | 4 | Expired |
| US7045309B2 | 9-substituted adenine derivatives as prodrug regulators of cell and tissue function | Human Necessities | 3 | Expired |
| US7601347B2 | Methods and compositions for controlled release of bioactive compounds | Chemistry; Metallurgy | 2 | Expired |
| US4209589A | Enzymatic process for preparing [.gamma.-.sup.32 P]-labeled nucleotides | Chemistry; Metallurgy | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.