Acorn Engineering Company
138Patents
66Active
138Granted
51Portfolio score
Filing activity: Jul 5, 1972 → Sep 18, 2023 · 14 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4167196A | Vandal-proof plumbing valve access box | Emerging Cross-Sectional Technologies | 96 | Expired |
| US4059289A | Waste drain connection | Mechanical Engineering; Lighting; Heating | 39 | Expired |
| US4462123A | Fabricated floor drain with large stepped flange for elastomeric trowelled covering | Fixed Constructions | 37 | Expired |
| US4203173A | Overflow inhibitor for plumbing fixtures | Emerging Cross-Sectional Technologies | 28 | Expired |
| USD411876S | Wash basins | General | 28 | Expired |
| USD560784S1 | Wall hung basin | General | 26 | Expired |
| US4480163A | Vandal-resistant push button electrical switch assembly | Electricity | 24 | Expired |
| US4195374A | Plumbing fixture overflow limiter | Emerging Cross-Sectional Technologies | 24 | Expired |
| USD451986S | Lay down tub | General | 21 | Expired |
| USD560783S1 | Wall hung basin | General | 19 | Expired |
| USD745120S1 | Basin | General | 19 | Active |
| US3933337A | Time-delayed automatic shut-off means for valves | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US4423527A | Fabricated floor drain with combination anchoring and seepage control flange | Fixed Constructions | 18 | Expired |
| USD468815S1 | Sink having hidden drain | General | 17 | Expired |
| USD483840S1 | Lay down tub | General | 17 | Expired |
| US3957241A | Ball joint relievable hanger for towels and the like | Emerging Cross-Sectional Technologies | 17 | Expired |
| USD823445S1 | Basin | General | 17 | Active |
| USD474835S1 | Sink having hidden drain | General | 16 | Expired |
| USD744074S1 | Basin | General | 16 | Active |
| USD560782S1 | Wall hung basin | General | 16 | Expired |
| USD455200S1 | Sink | General | 16 | Expired |
| USD744620S1 | Sink | General | 16 | Active |
| US5067181A | Blow out toilet with low water volume usage | Fixed Constructions | 15 | Expired |
| USD462113S1 | Soaking tub | General | 14 | Expired |
| USD501674S1 | Sink basin | General | 14 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.