Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Patents specification

Unlike most crystalline polymers, PVDF exhibits thermodynamic compatibiUty with other polymers (133). Blends of PVDF and poly(methyl methacrylate) (PMMA) are compatible over a wide range of blend composition (134,135). SoHd-state nmr studies showed that isotactic PMMA is more miscible with PVDF than atactic and syndiotactic PMMA (136). MiscibiUty of PVDF and poly(alkyl acrylates) depends on a specific interaction between PVDF and oxygen within the acrylate and the effect of this interaction is diminished as the hydrocarbon content of the ester is increased (137). Strong dipolar interactions are important to achieve miscibility with poly(vinyhdene fluoride) (138). PVDF blends are the object of many papers and patents specific blends of PVDF and acryflc copolymers have seen large commercial use. [Pg.387]

The bulk of the patent specification is the disclosure, the text and illustrations that describe the claimed invention in detail and explain how the claimed invention differs from the prior art. Modem patent disclosures contain a summary of the claimed invention, a description of the background of the invention, a general description of the way in which the invention is made and used, specific examples, and, where appHcable, drawings of the invention in general or specific embodiments. The technical information provided in a patent specification may be used without infringing the patent only practicing the invention defined in the claims within the term and territory of the patent grant is forbidden. Because much of the information in patent specifications is never pubHshed in refereed journals or other nonpatent media, patent disclosures are an invaluable part of the technical Hterature. [Pg.45]

A new initiative introduced by Derwent during 1995 is the Patents Citation Index, an on-line database of patent citations that includes both examiners citations and patentees citations to prior art from patent specifications. When given a known invention of interest, as represented by a patent family, the database can identify any patent against which it has been cited, as well as eadier patents cited by any member of that family. Limited citation... [Pg.54]

Documentation abstracts, useful as they are, may also prove inadequate for final decisions, which would make it necessary for the searcher to obtain and examine copies of full patent specifications. Although the increasing availabihty of sets of full specifications on CD-ROM at modest cost is making it easier for searchers to have in their collections copies of those specifications they might need to consult, the necessity to go beyond computer output, whether to abstracts or full specifications, is stiU one of the bottlenecks of computer searching, and therefore an area in which significant new developments are hoped for. [Pg.57]

At least three types of citations in patents can be identified inventors citations found in the patent specification, examiners citations found on issued U.S. patents, and examiners citations found on pubHshed appHcations and granted patents from other countries. A patent inventor cites prior art in order to distance the invention from that art, rather than to show a close relationship. Whereas scientific researchers may want to show how closely they have built on what went before, for an inventor that can suggest anticipation or at least obviousness. Thus, citations within a patent typicaHy try to demonstrate the inadequacies of prior inventions and the uniqueness of the patentee s own work. References tied by this type of citation can be usefiil in developing a picture of the state of the art, but often show sharply differing technologies. [Pg.58]

In order to control the air supply of what is known as an atmospheric appliance, the main challenge lies in finding a low-cost and robust actuator to achieve an optimal air ratio. Numerous methods are mentioned in the relevant literature and in patent specifications. Unfortunately, most of these concepts are far too costly and elaborate to be used in serial production. Despite these difficulties there have been some promising approaches. [Pg.47]

Patents Citation Index, 18 227, 238 Patent searches, 18 207-210. See also Patentability searches Patent information searches Patent specifications, searching of, 18 234 Patents Preview, 18 226, 236 PATFULL files, 18 247-248 pat gene, 13 360, 361t Pathogenic yeasts, 26 475-476 Patient package inserts (PPIs), 18 718 PATOLIS database, 18 248-249 Patternation, 23 194 of sprays, 23 187-188 Patternators, 23 188, 194 Pattern dental waxes, 8 296 Patterned electrodeposition, 9 811-832 Patterned impressions, in blood, 12 102 Pattern recognition examinations, 12 100-101... [Pg.677]

Chevron Philhps Chemical Company LP, Raman spectrometry for monitoring and control of slurry processes for polymerizing olehns. Inventor D.R. Battiste. 20 Apr 2004. 11 pp. (inch 1 fig.). Appl. 3 Nov 2000. Int. Cl. C08F 2/14. US Patent Specification 6,723,804 B1... [Pg.239]

Chevron Phillips Chemical Company LP, Spectroscopic method and apparatus for monitoring polyolefin production. Inventor D.R. Battiste. 1 Jan 2008. 47 pp. (inch 31 Hg.). Appl. 24 Sep 2004. Int. Cl. COIN 21/65 GOIJ 3/44. US Patent Specification 7,315,369 B2... [Pg.239]

See other pages where Patents specification is mentioned: [Pg.43]    [Pg.43]    [Pg.43]    [Pg.43]    [Pg.44]    [Pg.46]    [Pg.46]    [Pg.47]    [Pg.52]    [Pg.54]    [Pg.54]    [Pg.56]    [Pg.57]    [Pg.57]    [Pg.57]    [Pg.57]    [Pg.57]    [Pg.59]    [Pg.62]    [Pg.62]    [Pg.290]    [Pg.40]    [Pg.334]    [Pg.574]    [Pg.16]    [Pg.459]    [Pg.289]    [Pg.311]    [Pg.116]    [Pg.121]    [Pg.29]    [Pg.260]    [Pg.233]    [Pg.233]    [Pg.234]    [Pg.234]    [Pg.235]    [Pg.239]    [Pg.239]    [Pg.239]    [Pg.242]    [Pg.242]   
See also in sourсe #XX -- [ Pg.388 ]

See also in sourсe #XX -- [ Pg.188 ]

See also in sourсe #XX -- [ Pg.2 , Pg.721 , Pg.722 , Pg.723 ]

See also in sourсe #XX -- [ Pg.721 , Pg.722 , Pg.723 ]



SEARCH



Patents specific

© 2024 chempedia.info