John Keem
28Patents
15h-index
39Co-inventors
81Inventor score
Filing activity: Jul 2, 1979 → Mar 16, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4608296A | Superconducting films and devices exhibiting AC to DC conversion | Emerging Cross-Sectional Technologies | 164 | Expired |
| US4619865A | Multilayer coating and method | Emerging Cross-Sectional Technologies | 90 | Expired |
| US4643951A | Multilayer protective coating and method | Emerging Cross-Sectional Technologies | 75 | Expired |
| US4675739A | Integrated radiation sensing array | Electricity | 41 | Expired |
| US4724169A | Method of producing multilayer coatings on a substrate | Chemistry; Metallurgy | 40 | Expired |
| US4525853A | Point source X-ray focusing device | Physics | 39 | Expired |
| US4717632A | Adhesion and composite wear resistant coating and method | Emerging Cross-Sectional Technologies | 30 | Expired |
| US4254354A | Interactive piezoelectric knock sensor | Physics | 28 | Expired |
| US4727000A | X-ray dispersive and reflective structures | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4693933A | X-ray dispersive and reflective structures and method of making the structures | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4675889A | Multiple wavelength X-ray dispersive devices and method of making the devices | Physics | 23 | Expired |
| US4867785A | Method of forming alloy particulates having controlled submicron crystallite size distributions | Electricity | 21 | Expired |
| US4645715A | Coating composition and method | Chemistry; Metallurgy | 18 | Expired |
| US5268216A | Multilayer solid lubricant composite structures and method of making same | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4637967A | Electrodes made with disordered active material and methods of making the same | Emerging Cross-Sectional Technologies | 16 | Expired |
| US6919690B2 | Modular uniform gas distribution system in an ion source | Electricity | 11 | Expired |
| US4723994A | Method of preparing a magnetic material | Electricity | 10 | Expired |
| US4698833A | Subassembly, method and system for monochromatizing X-rays | Physics | 9 | Expired |
| US4568614A | Steel article having a disordered silicon oxide coating thereon and method of preparing the coating | Chemistry; Metallurgy | 9 | Expired |
| US5116434A | Method of manufacturing, concentrating, and separating enhanced magnetic parameter material from other magnetic co-products | Electricity | 9 | Expired |
| US5403408A | Non-uniaxial permanent magnet material | Electricity | 7 | Expired |
| US4834811A | Method of manufacturing, concentrating, and separating enhanced magnetic parameter material from other magnetic co-products | Electricity | 6 | Expired |
| US6984942B2 | Longitudinal cathode expansion in an ion source | Electricity | 3 | Expired |
| US8812976B2 | Programmable equipment configuration method and apparatus | Physics | 3 | Active |
| US7718983B2 | Sputtered contamination shielding for an ion source | Electricity | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.