William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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AbstractIt has been discovered that mesenchymal stem cells (MSCs) in a polymeric carrier implanted into a cartilage and/or bone defect will differentiate to form cartilage and/or bone, as appropriate. Suitable polymeric carriers include porous meshes or sponges formed of synthetic or natural polymers, as well as polymer solutions. A presently preferred material is a polyglycolic acid mesh.Other References
| InventorsAssigneeApplicationNo. 403640 filed on 03/14/1995US Classes:435/325, ANIMAL CELL, PER SE (E.G., CELL LINES, ETC.); COMPOSITION THEREOF; PROCESS OF PROPAGATING, MAINTAINING OR PRESERVING AN ANIMAL CELL OR COMPOSITION THEREOF; PROCESS OF ISOLATING OR SEPARATING AN ANIMAL CELL OR COMPOSITION THEREOF; PROCESS OF PREPARING A COMPOSITION CONTAINING AN ANIMAL CELL; CULTURE MEDIA THEREFORE424/423, Surgical implant or material424/426, Errodable, resorbable, or dissolving435/349, Avian cell, per se435/380Releasing bound or adhered cell using proteaseField of Search424/426, Errodable, resorbable, or dissolving424/423, Surgical implant or material435/325, ANIMAL CELL, PER SE (E.G., CELL LINES, ETC.); COMPOSITION THEREOF; PROCESS OF PROPAGATING, MAINTAINING OR PRESERVING AN ANIMAL CELL OR COMPOSITION THEREOF; PROCESS OF ISOLATING OR SEPARATING AN ANIMAL CELL OR COMPOSITION THEREOF; PROCESS OF PREPARING A COMPOSITION CONTAINING AN ANIMAL CELL; CULTURE MEDIA THEREFORE435/349, Avian cell, per se435/380Releasing bound or adhered cell using proteaseExaminersPrimary: Criares, Theodore J.Attorney, Agent or FirmUS Patent References4352883, Encapsulation of biological materialIssued on: 10/05/1982 Inventor: Lim4434094, Partially purified osteogenic factor and process for preparing same from demineralized bone Issued on: 02/28/1984 Inventor: Seyedin , et al.4774322, Polypeptide cartilage-inducing factors found in bone Issued on: 09/27/1988 Inventor: Seyedin , et al.4846835, Technique for healing lesions in cartilage Issued on: 07/11/1989 Inventor: Grande4968590, Osteogenic proteins and polypeptides Issued on: 11/06/1990 Inventor: Kuberasampath, et al.5041138, Neomorphogenesis of cartilage in vivo from cell culture Issued on: 08/20/1991 Inventor: Vacanti, et al.5133755, Method and apparatus for diodegradable, osteogenic, bone graft substitute device Issued on: 07/28/1992 Inventor: Brekke5197985, Method for enhancing the implantation and differentiation of marrow-derived mesenchymal cells Issued on: 03/30/1993 Inventor: Caplan, et al.5226914, Method for treating connective tissue disorders Issued on: 07/13/1993 Inventor: Caplan, et al.5328695Muscle morphogenic protein and use thereof Issued on: 07/12/1994 Inventor: Lucas, et al. Foreign Patent References
International ClassesC12N 005/00C12N 005/02 A61F 002/00 |