Construction Forms, Inc.
18Patents
1Active
18Granted
33Portfolio score
Filing activity: Nov 4, 1974 → Sep 14, 2017
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4311248A | High pressure coupling apparatus | Mechanical Engineering; Lighting; Heating | 65 | Expired |
| US6758500B2 | Flared ends conduit coupling | Mechanical Engineering; Lighting; Heating | 37 | Expired |
| US4643460A | High pressure concrete line coupling clamp with limit adjust apparatus | Emerging Cross-Sectional Technologies | 34 | Expired |
| US6467812B1 | Pipe having replaceable wear resistant lined coupler | Mechanical Engineering; Lighting; Heating | 32 | Expired |
| US3967837A | High pressure coupling apparatus | Mechanical Engineering; Lighting; Heating | 29 | Expired |
| US5302017A | Rotating mixing drum with replaceable liner for mixing aggregate and binder | Performing Operations; Transporting | 20 | Expired |
| US5097585A | Method of forming a composite tubular unit by expanding, low-frequency induction heating and successively quenching | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5379805A | Single solid thin wall pipe for abrasive material having a gradual transition in hardness | Chemistry; Metallurgy | 12 | Expired |
| US4796814A | Semi-liquid cementitious spray nozzle apparatus | Performing Operations; Transporting | 11 | Expired |
| US6766570B1 | Coupling units connecting tubular members having a hardened inner wall for carrying mechanically abrasive fluid concrete | Emerging Cross-Sectional Technologies | 10 | Expired |
| US6375228B1 | Coupling units connecting tubular members having a hardened inner wall for carrying mechanically abrasive fluid concrete | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4640533A | Adjustable pipe extender for high pressure lines carrying abrasive materials | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4305607A | Concrete pumping swivel coupling apparatus | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US6913041B2 | Tapered boom hose | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4437646A | Discharge valve for concrete pumping apparatus | Emerging Cross-Sectional Technologies | 3 | Expired |
| US6871832B2 | Fiberglass, reinforced concrete hose shut-off valve | Emerging Cross-Sectional Technologies | 2 | Expired |
| US6817591B2 | Concrete hose shut-off valve | Fixed Constructions | 1 | Expired |
| US10151395B2 | Flexible concrete hose shut-off valve | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.