Surface Combustion, Inc.
29Patents
2Active
29Granted
36Portfolio score
Filing activity: Feb 20, 1987 → Oct 27, 2015 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5286313A | Process control system using polarizing interferometer | Physics | 32 | Expired |
| US4924785A | Thermal cleaning system | Emerging Cross-Sectional Technologies | 26 | Expired |
| US4963091A | Method and apparatus for effecting convective heat transfer in a cylindrical, industrial heat treat furnace | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US4913069A | Batch pyrolysis system | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US5211820A | Gas analysis system for furnaces and the like | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US5137616A | Gas analysis system for furnaces and the like | Physics | 15 | Expired |
| US5127827A | Industrial furnace with improved heat transfer | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US5364476A | Industrial variable carbon potential gas generator | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6505483B1 | Glass transportation system | Chemistry; Metallurgy | 13 | Expired |
| US6991687B2 | Vacuum carburizing with napthene hydrocarbons | Chemistry; Metallurgy | 11 | Expired |
| US4853046A | Ion carburizing | Chemistry; Metallurgy | 11 | Expired |
| US7033446B2 | Vacuum carburizing with unsaturated aromatic hydrocarbons | Chemistry; Metallurgy | 11 | Expired |
| US5127967A | Ion carburizing | Chemistry; Metallurgy | 10 | Expired |
| US5228850A | Industrial furnace with improved heat transfer | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US6283749A | Inside/out, industrial vacuum furnace | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US5478985A | Heat treat furnace with multi-bar high convective gas quench | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US5074782A | Industrial furnace with improved heat transfer | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US5402233A | Furnace control apparatus using polarizing interferometer | Physics | 9 | Expired |
| US4834344A | Apparatus for inside-outside tube quenching | Performing Operations; Transporting | 8 | Expired |
| US5320329A | Pressure pad for stably floating thin strip | Chemistry; Metallurgy | 6 | Expired |
| US7267793B2 | Furnace for vacuum carburizing with unsaturated aromatic hydrocarbons | Chemistry; Metallurgy | 6 | Expired |
| US7204952B1 | Vacuum furnace for carburizing with hydrocarbons | Chemistry; Metallurgy | 5 | Expired |
| US5554230A | Low dew point gas generator cooling system | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5550858A | Heat treat furnace with multi-bar high convective gas quench | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US5035610A | Internal heat exchange tubes for inductrial furnaces | Mechanical Engineering; Lighting; Heating | 2 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.