Softub, Inc.
28Patents
1Active
28Granted
34Portfolio score
Filing activity: Jul 30, 1986 → Nov 6, 2009 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5585025A | SPA control circuit | Physics | 71 | Expired |
| US4843659A | Tub apparatus | Human Necessities | 44 | Expired |
| US6444129B1 | Timing of spa water treatment | Chemistry; Metallurgy | 38 | Expired |
| USD382945S | Spa tub | General | 37 | Expired |
| US5619759A | Insulated cover for a hot tub | Fixed Constructions | 37 | Expired |
| US5283915A | Power package for spa apparatus | Human Necessities | 35 | Expired |
| US4981543A | Tub apparatus | Human Necessities | 35 | Expired |
| US5092951A | Method of forming a tub apparatus | Human Necessities | 31 | Expired |
| US5983416A | Electrically powdered spa jet unit | Human Necessities | 27 | Expired |
| US6295662A | Porous solenoid structure | Mechanical Engineering; Lighting; Heating | 26 | Expired |
| US5742954A | Electrically powered spa jet unit | Human Necessities | 25 | Expired |
| US6066253A | Spa or pool water filtering apparatus | Performing Operations; Transporting | 24 | Expired |
| US4858254A | Tub apparatus | Human Necessities | 20 | Expired |
| US5794280A | Spa apparatus with heat transferring hanging interior structural liner | Human Necessities | 13 | Expired |
| US5799345A | Spa apparatus with multiple sections | Human Necessities | 11 | Expired |
| US5527412A | Spa apparatus | Emerging Cross-Sectional Technologies | 10 | Expired |
| USD430302S | Sauna enclosure | General | 10 | Expired |
| US5133818A | Method of forming a tub apparatus | Human Necessities | 10 | Expired |
| US5898957A | Spa tub with vibratory massage element | Human Necessities | 8 | Expired |
| USD399306S | Spa tub | General | 7 | Expired |
| US5745934A | Spa apparatus with hanging structural liner | Human Necessities | 7 | Expired |
| US5392473A | Power package for SPA apparatus | Human Necessities | 6 | Expired |
| US5970530A | Hinged cover for a spa tub | Fixed Constructions | 6 | Expired |
| US5802630A | Insulated cover for a hot tub | Fixed Constructions | 6 | Expired |
| US6800205B2 | Method and means for ozonation of pools and spas | Chemistry; Metallurgy | 4 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.