Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7347496 | Adjustable chair backrest A chair backrest adjusting mechanism includes a seat supporting frame, a backrest supporting arm, amount, a supporting arm cover, and a ball-shaped handle. The seat supporting frame is fixedly connected at a lower end to a base below a chair seat, and pivotally conn... | 03/25/2008 |
| 7338123 | Ergonomic chair An ergonomic chair including a seat support structure with a seat bottom and seat back supported by the seat support structure. The seat bottom is shortened to accommodate the buttocks and ischia, with no weight-bearing on the thighs. The seat back has an upper port... | 03/04/2008 |
| 7290836 | Patient chair A back for a patient chair having a back shell with a substantially rigid central S-shaped central portion and laterally extending wing portions which have sufficient flexibility to allow deflection in the direction of the front surface upon imposition of a force. T... | 11/06/2007 |
| 7261368 | Ergonomic chair An ergonomic seating assembly for comfortably supporting an individual during prolonged periods of time sitting in one position thereby alleviating back and neck strain and increasing productivity. ... | 08/28/2007 |
| 7134722 | Chair A simple arrangement of a chair allows transformation of the shape of a backrest. The chair has a transformable backrest and a backrest receiving member that supports a bottom end portion of the backrest in a slidable manner toward a certain direction and an operati... | 11/14/2006 |
| 6817667 | Reclinable chair A chair (10) includes a supporting frame (20,22) and a seat portion (14) which is foldable about a transverse fold to define a rearward portion behind the transverse fold and a forward portion, forward of the transverse fold. The seat portion ( | 11/16/2004 |
| 6752456 | Stool apparatus A stool apparatus for permitting a user to sit while using a sink. The stool apparatus includes a frame assembly being designed for being pivotally coupled to a cabinet positioned below the sink. The frame assembly is pivotal between a stored position and a deployed... | 06/22/2004 |
| 6513874 | Chair, especially office chair A chair (1, 1'), in particular an office chair, having a backrest (6) which is arranged such that it can be rotated about a first point of rotation (8) in relation to a seat carrier (2) and which can be inclined from a rest position, and having a seat sur... | 02/04/2003 |
| 6394547 | Ergonomic chair A seat or chair that includes a seat back that is moveable so that it may be positioned to provide primary support to the spine and surrounding tissue centered on the region between the 2nd lumbar vertebrae and the 11th thoracic vert... | 05/28/2002 |
| 5511852 | Adjustable backrest for a chair An apparatus is provided for adjusting the position of a backrest relative to a chair seat. The backrest includes an elongated stem having a curved lower portion. Preferably, a spring operably engages the stem to bias it in an upward direction. A housing ... | 04/30/1996 |
| 4880272 | Seat furniture A seat (2) is mounted pivotably about a first axle (A1) on the stand (1) of the chair. The seat frame (8) is connected to a second axle (A2) which is fastened to the backrest (3) behind the backrest (3) at a horizontal distance from the latter and at a ve... | 11/14/1989 |
| 4830430 | Split-back chair, particularly office chair To permit adjustment of back parts of the chair, spring means, preferably in form of two U-bent spring rods, couple a lower back part (19) to an upper back part (21) and the effective spring length of the springs (23) is adjustable or changeable by moving... | 05/16/1989 |
| 4697846 | Adjustable chair An adjustable chair structure comprises a support frame of substantially L-shape conformation supported by a base in the form of an upright column supported on a set of radial feet carried on castors. The L-shape support frame has a horizontal arm for sup... | 10/06/1987 |
| 4099774 | Stenographer's chair A chair having a novel structure by which the seat cushion and backrest cushion are attached to the chair frame. The chair includes a novel first adjustment device by which the horizontal position of the backrest, and the rearward tilt pressure of the bac... | 07/11/1978 |
