Robert D. Tack
31Patents
12h-index
43Co-inventors
81Inventor score
Filing activity: Jan 20, 1978 → Feb 9, 2006
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4375973A | Additive combinations and fuels containing them | Chemistry; Metallurgy | 43 | Expired |
| US4261703A | Additive combinations and fuels containing them | Chemistry; Metallurgy | 33 | Expired |
| US4713088A | Middle distillate compositions with improved cold flow properties | Chemistry; Metallurgy | 32 | Expired |
| US4839074A | Specified C.sub.14 -carboxylate/vinyl ester polymer-containing compositions for lubricating oil flow improvement | Chemistry; Metallurgy | 32 | Expired |
| US4464182A | Glycol ester flow improver additive for distillate fuels | Chemistry; Metallurgy | 28 | Expired |
| US4863486A | Middle distillate compositions with improved low temperature properties | Chemistry; Metallurgy | 20 | Expired |
| US6458175B1 | Oil additives and compositions | Chemistry; Metallurgy | 16 | Expired |
| US6232277A | Lubricating oil compositions | Chemistry; Metallurgy | 16 | Expired |
| US4882034A | Crude oil or fuel oil compositions | Chemistry; Metallurgy | 16 | Expired |
| US5441545A | Middle distillate compositions with improved low temperature properties | Chemistry; Metallurgy | 15 | Expired |
| US5814110A | Chemical compositions and use as fuel additives | Chemistry; Metallurgy | 15 | Expired |
| US4481013A | Two component flow improver additive for middle distillate fuel oils | Chemistry; Metallurgy | 12 | Expired |
| US4810260A | Middle distillate compositions with improved cold flow properties | Chemistry; Metallurgy | 11 | Expired |
| US4221673A | Metal phenates | Chemistry; Metallurgy | 9 | Expired |
| US4826615A | Lubricating oil composition containing dual additive combination for low temperature viscosity improvement (PTF-004) | Chemistry; Metallurgy | 8 | Expired |
| US6554876B1 | Oil compositions | Chemistry; Metallurgy | 7 | Expired |
| US4891145A | Lubricating oil composition | Chemistry; Metallurgy | 7 | Expired |
| US4546137A | Additive combinations and fuels containing them | Chemistry; Metallurgy | 6 | Expired |
| US7067599B2 | Fuel oil additives and compositions | Chemistry; Metallurgy | 5 | Expired |
| US5364419A | Fuel oil additives | Chemistry; Metallurgy | 4 | Expired |
| US5716915A | Oil compositions | Chemistry; Metallurgy | 4 | Expired |
| US5046355A | Process for assessing cold start performance of a wax containing fuel | Physics | 4 | Expired |
| US6270538A | Lubricating oil compositions | Chemistry; Metallurgy | 4 | Expired |
| US4957650A | Lubricating oil composition containing dual additive combination for low temperature viscosity improvement | Chemistry; Metallurgy | 2 | Expired |
| US5684093A | Nitrogen-containing compounds | Chemistry; Metallurgy | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.