Daniel Industries, Inc.
🏢 View company profile →71Patents
1Active
71Granted
38Portfolio score
Filing activity: Sep 30, 1974 → Apr 4, 2006 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6151958A | Ultrasonic fraction and flow rate apparatus and method | Physics | 72 | Expired |
| US5524863A | Quarter turn rotatable flow control valve | Emerging Cross-Sectional Technologies | 45 | Expired |
| US6550345B1 | Technique for measurement of gas and liquid flow velocities, and liquid holdup in a pipe with stratified flow | Physics | 42 | Expired |
| US5085250A | Orifice system | Physics | 40 | Expired |
| US6335959B1 | Apparatus and method for determining oil well effluent characteristics for inhomogeneous flow conditions | Physics | 37 | Expired |
| US4586534A | Check valve mechanism | Emerging Cross-Sectional Technologies | 37 | Expired |
| US4394023A | High temperature valve stem packing with coiled graphite seal rings | Mechanical Engineering; Lighting; Heating | 36 | Expired |
| US5069252A | Orifice system intermediate interface | Physics | 31 | Expired |
| US6209388A | Ultrasonic 2-phase flow apparatus and method | Physics | 30 | Expired |
| US5163655A | Spring urged seat assembly for valves | Mechanical Engineering; Lighting; Heating | 29 | Expired |
| US6651514B2 | Dual function flow conditioner and check meter | Physics | 28 | Expired |
| US4340088A | Pressure balanced safety valve for wells and flow lines | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4436280A | Valve actuator mechanism for lift-turn type valves | Emerging Cross-Sectional Technologies | 26 | Expired |
| US6374860B2 | Integrated valve design for gas chromatograph | Emerging Cross-Sectional Technologies | 25 | Expired |
| US4478251A | Orifice fitting seal assembly | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4331315A | Actuatable safety valve for wells and flowlines | Fixed Constructions | 24 | Expired |
| US5181542A | Orifice system mounting assembly | Physics | 22 | Expired |
| US4364544A | Valve seat with sediment guard | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US4410038A | Intermittent well controller | Fixed Constructions | 21 | Expired |
| US5005805A | Lift-turn valve and actuator assembly | Emerging Cross-Sectional Technologies | 21 | Expired |
| US6227034A | Integrated valve design for gas chromatograph | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4606218A | Compact bidirectional meter prover mechanism | Physics | 20 | Expired |
| US4665946A | Rotary control valves with pressure-reducing means | Emerging Cross-Sectional Technologies | 20 | Expired |
| US6533065B2 | Noise silencer and method for use with an ultrasonic meter | Physics | 19 | Expired |
| US5318073A | Orifice plate seal | Mechanical Engineering; Lighting; Heating | 18 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.