Weber Knapp Company
49Patents
11Active
49Granted
40Portfolio score
Filing activity: Jan 16, 1975 → Sep 3, 2021 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4625657A | Adjustable keyboard supporting mechanism | Human Necessities | 113 | Expired |
| US6038986A | Brake operational control | Human Necessities | 76 | Expired |
| US6176456A | Keyboard support mechanism | Emerging Cross-Sectional Technologies | 59 | Expired |
| US4747353A | Straight line motion mechanism | Mechanical Engineering; Lighting; Heating | 55 | Expired |
| US4981085A | Table lift mechanism | Human Necessities | 52 | Expired |
| US5791263A | Adjustable work surface | Emerging Cross-Sectional Technologies | 52 | Expired |
| US4644875A | Adjustable keyboard supporting mechanism | Human Necessities | 50 | Expired |
| US6488248B1 | Keyboard mechanism tracking system | Emerging Cross-Sectional Technologies | 48 | Expired |
| US3955241A | Cam operated spring biased counterbalance hinge mechanism for cabinet lid or the like | Fixed Constructions | 40 | Expired |
| US4184705A | Hood latch | Emerging Cross-Sectional Technologies | 37 | Expired |
| US4568132A | Motorized lift mechanism | Human Necessities | 35 | Expired |
| US5501420A | Counterbalance mechanism | Emerging Cross-Sectional Technologies | 34 | Expired |
| US4307912A | Multiple position reclining chair assembly | Human Necessities | 24 | Expired |
| US8296906B2 | Four bar hinge | Fixed Constructions | 23 | Active |
| US4215884A | Touch latch | Emerging Cross-Sectional Technologies | 23 | Expired |
| US6021985A | Clamping mechanism for keyboard support | Emerging Cross-Sectional Technologies | 22 | Expired |
| US6098944A | Holder for supporting a component below a support | Human Necessities | 22 | Expired |
| US4187578A | Caster bracket and method of forming same | Emerging Cross-Sectional Technologies | 20 | Expired |
| US6688563B1 | Support for a mouse surface | Physics | 18 | Expired |
| US5797331A | Counterbalanced table mechanism | Human Necessities | 15 | Expired |
| US4091502A | Counterbalance mechanism | Fixed Constructions | 15 | Expired |
| US6257538A | Keyboard mounting mechanism | Human Necessities | 14 | Expired |
| US5180136A | Counterbalance mechanism | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US6135404A | Keyboard mounting mechanism | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5181620A | Counterbalance mechanism | Performing Operations; Transporting | 12 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.