William Y. Lam
32Patents
9h-index
21Co-inventors
75Inventor score
Filing activity: Feb 15, 1983 → Jan 18, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6096695A | Sulfurized phenolic antioxidant composition, method of preparing same, and petroleum products containing same | Chemistry; Metallurgy | 41 | Expired |
| US6599865B1 | Effective antioxidant combination for oxidation and deposit control in crankcase lubricants | Chemistry; Metallurgy | 29 | Expired |
| US4885365A | Dithiocarbanate lubricant compositions | Chemistry; Metallurgy | 23 | Expired |
| US4957643A | Lubricant compositions | Chemistry; Metallurgy | 22 | Expired |
| US4876375A | Norbornyl dithiocarbamates | Chemistry; Metallurgy | 22 | Expired |
| US4927552A | Lubricating oil composition | Chemistry; Metallurgy | 21 | Expired |
| US4946610A | Sulfur-bridged phenolic antioxidants | Chemistry; Metallurgy | 11 | Expired |
| US4487706A | Metal deactivator as a lubricant additive | Chemistry; Metallurgy | 9 | Expired |
| US4563302A | Sulfurized olefin process | Chemistry; Metallurgy | 9 | Expired |
| US8084403B2 | Lubricant formulations and methods | Chemistry; Metallurgy | 8 | Active |
| US4639324A | Lubricating compositions | Chemistry; Metallurgy | 6 | Expired |
| US9068135B1 | Lubricating oil composition and additive therefor having improved piston deposit control and emulsion stability | Chemistry; Metallurgy | 5 | Active |
| US9663743B2 | Lubricating method and composition for reducing engine deposits | Chemistry; Metallurgy | 5 | Active |
| US7776800B2 | Titanium-containing lubricating oil composition | Chemistry; Metallurgy | 3 | Active |
| US5004481A | Fuel compositions containing sulfur-bridged phenolic antioxidants | Chemistry; Metallurgy | 3 | Expired |
| US5166439A | Composition containing a mannich base of a partially sulfurized hindered phenol mixture | Chemistry; Metallurgy | 3 | Expired |
| US4836942A | Lubricant composition | Chemistry; Metallurgy | 3 | Expired |
| US7407918B2 | Lubricating oil compositions | Chemistry; Metallurgy | 3 | Expired |
| US5045089A | Fuel compositions containing phenolic antioxidants | Chemistry; Metallurgy | 2 | Expired |
| US5026493A | Reduced ash content lubricants | Chemistry; Metallurgy | 2 | Expired |
| US10214703B2 | Lubricants with zinc dialkyl dithiophosphate and their use in boosted internal combustion engines | Chemistry; Metallurgy | 2 | Active |
| US7879774B2 | Titanium-containing lubricating oil composition | Chemistry; Metallurgy | 1 | Active |
| US7897548B2 | Additives and lubricant formulations for improved antiwear properties | Chemistry; Metallurgy | 1 | Active |
| US5009802A | Phenolic antioxidant composition | Chemistry; Metallurgy | 1 | Expired |
| US10377963B2 | Lubricants for use in boosted engines | Chemistry; Metallurgy | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.