Jon A. Orvik
22Patents
5h-index
27Co-inventors
69Inventor score
Filing activity: Oct 1, 1974 → May 5, 1995
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5106984A | 2-hydrocarbyl-3,6-dichloropyridines and their preparation | Chemistry; Metallurgy | 13 | Expired |
| US4118373A | Preparation of urethane elastomers from epoxy resin, polyols and polyisocyanates using a catalyst composition of an organometal salt with either nitrogen or phosphorus compounds | Chemistry; Metallurgy | 6 | Expired |
| US4766219A | Preparation of 2-cyano-6-chloropyridine compounds | Chemistry; Metallurgy | 6 | Expired |
| US5012017A | Phenoxyphenoxypropionates, intermediates thereof and methods of preparation | Chemistry; Metallurgy | 5 | Expired |
| US4140847A | Polymers of oxetane-spiro-cyclic polyethers | Chemistry; Metallurgy | 5 | Expired |
| US4988812A | Aqueous process for the preparation of 5-methyl-n-(aryl)-1,2,4-triazolo(1,5-A)pyrimidine-2-sulfonamides | Chemistry; Metallurgy | 5 | Expired |
| US5488109A | 5-alkoxy[1,2,4]triazolo[1,5-c]pyrimidine-2(3H)--thione compounds and their use in the preparation of and 2-chlorosulfonyl-5-alkoxy[1,2,4]triazolo[1,5-c]-pyrimidine compounds | Chemistry; Metallurgy | 4 | Expired |
| US4275212A | Method of preparing pyridinyloxyphenols and derivatives | Chemistry; Metallurgy | 4 | Expired |
| US4499276A | Reduction of trichloromethylpyridines to dichloromethylpyridines | Chemistry; Metallurgy | 3 | Expired |
| US5480991A | 2-Alkoxy-4-hydroazinopyrimidine compounds and their use in the preparation of 5-alkoxy-1,2,4-triazolo[4,3-c]pyrimidine-3(2H)-thione compounds | Chemistry; Metallurgy | 2 | Expired |
| US4713460A | 2,3-bis-(poly)(chloromethyl)pyridines | Chemistry; Metallurgy | 2 | Expired |
| US4499277A | Reduction of trichloromethylpyridines to dichloromethylpyridines | Chemistry; Metallurgy | 2 | Expired |
| US4739070A | Preparation of substituted (dichloromethyl)pyridines | Chemistry; Metallurgy | 2 | Expired |
| US4327220A | Process for reducing picoline derivatives using copper catalyst | Chemistry; Metallurgy | 1 | Expired |
| US4257899A | Method for removing chloropicrin from an aqueous medium | Emerging Cross-Sectional Technologies | 1 | Expired |
| US5563269A | 2-alkoxy-4-hydrazinopyrimidine compounds and their use in the preparation of 5-alkoxy-1,2,4-triazolo(4,3-C)-pyrimidine-3 (2H)-thione compounds | Chemistry; Metallurgy | 1 | Expired |
| US5189210A | Process for the preparation of 3- and/or 5-substituted anthranilic acids | Chemistry; Metallurgy | 1 | Expired |
| US5552546A | Process for the preparation of 2-ethoxy-4,6-dihydroxypyrimidine | Chemistry; Metallurgy | 0 | Expired |
| US4594422A | Selective halogenation of 6-hydroxy picoline derivatives | Chemistry; Metallurgy | 0 | Expired |
| US4705859A | Polychloropyridine production from polychloro-2,3-lutidines | Chemistry; Metallurgy | 0 | Expired |
| US5084576A | 2-hydrocarbyl-3,6-dichloropyridine compounds | Chemistry; Metallurgy | 0 | Expired |
| US5461153A | 2-alkoxy-4-hydrazinopyrimidine compounds | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.