Polydrain, Inc.
6Patents
0Active
6Granted
28Portfolio score
Filing activity: Jun 20, 1983 → Mar 24, 1986
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4640643A | Sidewall extension for drain channel system and method for extending the continuous slope of a drainage channel system | Emerging Cross-Sectional Technologies | 53 | Expired |
| US4621939A | Drainage channel | Emerging Cross-Sectional Technologies | 50 | Expired |
| US4553874A | Slotted drainage grate with support | Fixed Constructions | 46 | Expired |
| US4498807A | Drainage channel with means for maintaining proper slope during installation | Emerging Cross-Sectional Technologies | 42 | Expired |
| US4515498A | Slotted drainage grate with support | Fixed Constructions | 36 | Expired |
| US4751945A | Dual containment channel for fluids | Mechanical Engineering; Lighting; Heating | 25 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.