Camco Inc.
🏢 View company profile →162Patents
0Active
162Granted
43Portfolio score
Filing activity: Sep 8, 1975 → Oct 6, 2003
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4588030A | Well tool having a metal seal and bi-directional lock | Fixed Constructions | 124 | Expired |
| US4688641A | Well packer with releasable head and method of releasing | Fixed Constructions | 119 | Expired |
| US4520870A | Well flow control device | Fixed Constructions | 105 | Expired |
| US4531581A | Piston actuated high temperature well packer | Fixed Constructions | 104 | Expired |
| US4161219A | Piston actuated well safety valve | Fixed Constructions | 84 | Expired |
| US6209342A | Refrigerator evaporator housing | Mechanical Engineering; Lighting; Heating | 82 | Expired |
| US6574984B1 | Refrigerator door mounted water dispensing assembly | Mechanical Engineering; Lighting; Heating | 81 | Expired |
| US4534414A | Hydraulic control fluid communication nipple | Emerging Cross-Sectional Technologies | 73 | Expired |
| US4510994A | Pump out sub | Fixed Constructions | 58 | Expired |
| US4252197A | Piston actuated well safety valve | Fixed Constructions | 58 | Expired |
| US6428130B1 | Refrigerator mullion | Mechanical Engineering; Lighting; Heating | 58 | Expired |
| US6736472B2 | Refrigerator cabinet refrigerant tube assembly | Mechanical Engineering; Lighting; Heating | 57 | Expired |
| US6546597B2 | Hollow appliance handle | Emerging Cross-Sectional Technologies | 54 | Expired |
| US4844166A | Method and apparatus for recompleting wells with coil tubing | Fixed Constructions | 54 | Expired |
| US4771831A | Liquid level actuated sleeve valve | Fixed Constructions | 53 | Expired |
| US4585067A | Method and apparatus for stopping well production | Fixed Constructions | 49 | Expired |
| US4660646A | Failsafe gas closed safety valve | Fixed Constructions | 47 | Expired |
| US4628661A | Scored metal appliance frame | Fixed Constructions | 43 | Expired |
| US4899822A | Apparatus for controlling the operation of an underwater installation | Fixed Constructions | 43 | Expired |
| US4579177A | Subsurface solenoid latched safety valve | Emerging Cross-Sectional Technologies | 42 | Expired |
| US4574889A | Method and apparatus for locking a subsurface safety valve in the open position | Fixed Constructions | 42 | Expired |
| US5070940A | Apparatus for deploying and energizing submergible electric motor downhole | Electricity | 42 | Expired |
| US6176099A | Ice making assembly for refrigerator | Mechanical Engineering; Lighting; Heating | 40 | Expired |
| US6447083B1 | Refrigerator with pull-out door | Mechanical Engineering; Lighting; Heating | 39 | Expired |
| US4605070A | Redundant safety valve system and method | Fixed Constructions | 37 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.