PHD, Inc.
89Patents
33Active
89Granted
44Portfolio score
Filing activity: Sep 20, 1976 → Oct 25, 2023 · 8 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4607873A | Gripper apparatus | Performing Operations; Transporting | 57 | Expired |
| US6048013A | Modular stamped parts transfer gripper | Emerging Cross-Sectional Technologies | 42 | Expired |
| US5941513A | Mounting bracket for modular workpiece holder | Emerging Cross-Sectional Technologies | 29 | Expired |
| US4421137A | Plug assembly for sealing a pressure fluid passage in a manifold or the like | Emerging Cross-Sectional Technologies | 26 | Expired |
| US7516948B2 | Pin clamp accessories | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US6056281A | Adjustable stoppers and mounting assemblies for parts grippers | Performing Operations; Transporting | 22 | Expired |
| US6176533A | Modular stamped parts transfer gripper | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4132153A | Metering control valve and fluid power system | Emerging Cross-Sectional Technologies | 19 | Expired |
| US7182326B2 | Pin clamp | Performing Operations; Transporting | 19 | Expired |
| US7448607B2 | Pin clamp assembly | Performing Operations; Transporting | 18 | Expired |
| US6273408A | Mounting bracket for modular workpiece holder | Emerging Cross-Sectional Technologies | 17 | Expired |
| US6641189B2 | Article sensor assembly | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5241896A | Pneumatic cylinder apparatus | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US4119017A | Non-rotatable fluid power cylinder | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US7467788B2 | Pin clamp | Performing Operations; Transporting | 15 | Active |
| US6575512B2 | Modular stamped parts transfer gripper | Emerging Cross-Sectional Technologies | 15 | Expired |
| US7032944B2 | Modular stamped parts transfer gripper | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6874834B2 | Linear slide gripper | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6588816B1 | Modular stamped parts transfer gripper | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6227586A | Modular stamped parts transfer gripper | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6948708B2 | Gripper provided with an adjustable sensor assembly | Performing Operations; Transporting | 12 | Expired |
| US6530616B1 | Continuity switch for parts grippers | Emerging Cross-Sectional Technologies | 12 | Expired |
| US7815176B2 | Lock mechanism for pin clamp assembly | Performing Operations; Transporting | 12 | Active |
| US4134306A | Rotary actuator | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6276733A | Jaw tips and jaw tip assemblies for parts grippers | Emerging Cross-Sectional Technologies | 11 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.