C.H. Heist Corp.
12Patents
0Active
12Granted
32Portfolio score
Filing activity: Sep 8, 1975 → Nov 22, 1996
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4095305A | Cleaning apparatus for tubes and tube bundles | Emerging Cross-Sectional Technologies | 41 | Expired |
| US4112535A | High pressure jet wall cleaner apparatus | Fixed Constructions | 24 | Expired |
| US4082104A | Pressure relief valve | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4469125A | Quick release valve | Emerging Cross-Sectional Technologies | 10 | Expired |
| USRE36465E | Furnace cleaning apparatus | General | 8 | Expired |
| US5588593A | Safety apparatus for high pressure liquid jet system | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5381811A | Furnace cleaning apparatus | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US4058870A | Lance tip construction | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US5535949A | Safety switch system for hydroblasting operations | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US5582349A | Hydroblasting spray gun having an on/off safety switch system | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US4011625A | Lance tip construction | Mechanical Engineering; Lighting; Heating | 1 | Expired |
| US4073026A | Lance tip construction | Mechanical Engineering; Lighting; Heating | 1 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.