Artificial flower
Patent 4957787 Issued on September 18, 1990. Estimated Expiration Date: 
September 27, 2008. 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.
September 27, 2008. 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 References 2823421 2940830 3137610 3351495 3775227 Sustainedly vapor-releasing body having excellent shape-retainability Preparation of amorphous, precipitated silica and siliceous filler-reinforced microporous polymeric separator Method for calendering temperature-critical thermoplastic material using a two-phase heat transfer medium Stretched microporous material Printed microporous material Patent #: 4861644 InventorsAssigneeApplicationNo. 250015 filed on 09/27/1988US Classes:428/24, Flower or flower petal428/26, Of cloth, paper, or chemically plastic matter428/207, Including coloring matter428/905, ODOR RELEASING MATERIAL428/910PRODUCT WITH MOLECULAR ORIENTATIONExaminersPrimary: Epstein, Henry F.Attorney, Agent or FirmForeign Patent References
International ClassesA41G 001/00B32B 003/26 AbstractAn artificial flower comprises at least one petal of microporous material which comprises a matrix consisting essentially of linear ultrahigh molecular weight polyolefin, a large proportion of finely divided water-insoluble siliceous filler, and interconnecting pores, and which microporous material has regions of stretch-induced molecularly oriented polymer in the matrix.Other References
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