Hair waving or straightening process and product
Patent 4416297 Issued on November 22, 1983. Estimated Expiration Date: 
August 13, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 13, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesProcess for permanently shaping hair Hair conditioning waving and straightening compositions and methods Patent #: 4175572 InventorsAssigneeApplicationNo. 06/292452 filed on 08/13/1981US Classes:132/205, Including specified treatment interval424/70.17, Polyamine, polyamide, or derivatives thereof424/70.2, Permanent waving or straightening424/70.21, Amphoteric or zwitterionic surfactant containing424/70.22Anionic surfactant containingExaminersPrimary: Rosenbaum, C. FredAssistant: Vinyard, Sherri E. Attorney, Agent or FirmInternational ClassesA45D 7/04 (20060101)A45D 7/00 (20060101) A61K 8/81 (20060101) A61K 8/72 (20060101) A61K 8/46 (20060101) A61K 8/84 (20060101) A61K 8/30 (20060101) A61Q 5/04 (20060101) AbstractA process for waving or straightening hair in which an anionic surfactant is added to the hair reducing solution and the hair is treated either during a prewetting step or during neutralization, or both with a cationic polymer product which forms a substantially water insoluble complex with the anionic surfactant in the presence of hair. | |
