Columbia Machine, Inc.
50Patents
17Active
50Granted
46Portfolio score
Filing activity: Feb 22, 1974 → Aug 10, 2022 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US3940229A | Apparatus for manufacturing rough faced bricks | Performing Operations; Transporting | 137 | Expired |
| US4316693A | Variable array can palletizer | Performing Operations; Transporting | 45 | Expired |
| US4195959A | Article stacking apparatus | Performing Operations; Transporting | 34 | Expired |
| US4162016A | Article stacker with overhead finger rake | Emerging Cross-Sectional Technologies | 31 | Expired |
| US4067456A | Apparatus for arranging and stacking nonrigid articles | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4063632A | Swingable arcuate guide for selectively orienting articles | Performing Operations; Transporting | 26 | Expired |
| US5059110A | Apparatus for forming concrete blocks having plural separately driven vibrator sets | Performing Operations; Transporting | 19 | Expired |
| US5542837A | Mold box assembly with partition plates | Performing Operations; Transporting | 18 | Expired |
| US3946880A | Apparatus for disassembling a layered stack of articles | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5118243A | Pallet load transfer method and apparatus | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4298305A | Method and apparatus for transferring loads | Performing Operations; Transporting | 15 | Expired |
| US5219591A | Apparatus for forming concrete blocks | Performing Operations; Transporting | 14 | Expired |
| US4194925A | Method and apparatus for washing mixing containers | Performing Operations; Transporting | 14 | Expired |
| US4498573A | Pail palletizer with rotatable clamps | Performing Operations; Transporting | 12 | Expired |
| US5395228A | Apparatus for forming concrete products | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5743510A | Self-aligning mold box assembly | Performing Operations; Transporting | 9 | Expired |
| US5939104A | Apparatus for forming a multilevel concrete product | Performing Operations; Transporting | 9 | Expired |
| US6352236B1 | Method and apparatus for forming concrete products | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4239433A | Palletizer with roller-assisted off-feed device | Performing Operations; Transporting | 7 | Expired |
| US5866026A | Method and apparatus for accommodating tolerances in a mold for concrete products | Performing Operations; Transporting | 7 | Expired |
| US5983752A | Adjustable counterweight system for a machine for forming concrete blocks, pavers or the like | Emerging Cross-Sectional Technologies | 6 | Expired |
| US7635261B2 | Large pallet machine for forming molded products | Performing Operations; Transporting | 6 | Active |
| US5503546A | Apparatus for forming concrete products | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5540869A | Method for forming concrete products | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5807591A | Method and apparatus for forming concrete products | Emerging Cross-Sectional Technologies | 5 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.