Robert D. Chapman
20Patents
3h-index
11Co-inventors
60Inventor score
Filing activity: Nov 29, 1979 → Dec 30, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5674382A | Wet oxidation apparatus with compressor | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4285742A | Heat treatment method | Chemistry; Metallurgy | 8 | Expired |
| US6417355B1 | Geminal-dinitro-1-5 diazocine derivatives | Chemistry; Metallurgy | 6 | Expired |
| US5495813A | Combustion method and apparatus | Emerging Cross-Sectional Technologies | 3 | Expired |
| US7875714B1 | Processes for preparing certain hexaazaisowurtzitanes and their use in preparing hexanitrohexaazaisowurtzitane | Chemistry; Metallurgy | 2 | Active |
| US6148678A | Furnace waste gas sampling | Physics | 2 | Expired |
| US5451429A | Method and apparatus for treating freshly metallized substrates | Chemistry; Metallurgy | 2 | Expired |
| US7632943B1 | Method for making 3,3,7,7-tetrakis(difluoramino)octahydro-1,5-dinitro-1,5-diazocine (HNFX) | Emerging Cross-Sectional Technologies | 2 | Expired |
| US7563889B1 | 3,3,7,7,-tetrakis(difluoramino)octahydro-1,5-diazocinium salts and method for making the same | Chemistry; Metallurgy | 2 | Expired |
| US6310204A | 5,5-bis(difluoramino)hexahydro-1,3-dinitropyrimidine (RNFX) and certain electronegatively substituted pyrimidines | Chemistry; Metallurgy | 2 | Expired |
| US8008527B1 | Octafluoropentaerythrityltetramine (octafluoro-peta) and process for its preparation | Chemistry; Metallurgy | 1 | Active |
| US6395899B2 | Electronegatively substituted pyrimidines and intermediates leading to RNFX | Chemistry; Metallurgy | 1 | Expired |
| US8444783B1 | 3,3,7,7-tetrakis(difluoramino)octahydro-1,5-diazocinium salts | Chemistry; Metallurgy | 0 | Active |
| US8268991B1 | Processes for preparing certain hexaazaisowurtzitanes and their use in preparing hexanitrohexaazaisowurtzitane | Chemistry; Metallurgy | 0 | Active |
| US8426583B1 | Processes for preparing certain hexaazaisowurtzitanes and their use in preparing hexanitrohexaazaisowurtzitane | Chemistry; Metallurgy | 0 | Active |
| US8426582B1 | Processes for preparing certain hexaazaisowurtzitanes and their use in preparing hexanitrohexaazaisowurtzitane | Chemistry; Metallurgy | 0 | Active |
| US8221566B1 | Process for employing HNFX as a biocidal explosive | Human Necessities | 0 | Active |
| US4855508A | Energetic diethers and process for their preparation | Chemistry; Metallurgy | 0 | Expired |
| US8268993B1 | Processes for preparing certain hexaazaisowurtzitanes and their use in preparing hexanitrohexaazaisowurtzitane | Chemistry; Metallurgy | 0 | Active |
| US6562985B2 | Geminal-dinitro-1-5 diazocine derivatives | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.