Angular brightness microprismatic retroreflective film or sheeting incorporating a syndiotactic vinyl aromatic polymer

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6274221
APP PUB NO 20010008679A1
SERIAL NO

09240342

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A novel microprismatic retroreflective film or sheeting is provided which comprises a transparent semicrystalline polymer. The microprismatic retroreflective film or sheeting of the present invention offers superior retroreflective brightness at large angles of incidence and at large observational angles. Syndiotactic vinyl aromatic polymers, especially syndiotactic polystyrene and copolymers thereof, are preferred semicrystalline polymers, as they impart good dimensional stability and resistance to moisture, and can be made resistant to UV radiation. Signing materials comprising these microprismatic retroreflective films provide improved performance for off-angle illumination and viewing in traffic control and other signing applications.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
3M INNOVATIVE PROPERTIES COMPANYST PAUL, MN8533

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ojeda, Jaime R Woodbury, MN 6 169
Smith, Kenneth L White Bear Lake, MN 139 2738
Tabar, Ronald J St. Paul, MN 16 395

Cited Art Landscape

Patent Info (Count) # Cites Year
 
KURARAY CO., LTD. (1)
5346950 Resin composition 42 1993
 
THE DOW CHEMICAL COMPANY (1)
5318839 Laminate with a styrenic polymer layer 20 1992
 
MINNESOTA MINING AND MANUFACTURING COMPANY (6)
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* 5754338 Structured retroreflective sheeting having a rivet-like connection 47 1996
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3M INNOVATIVE PROPERTIES COMPANY (4)
5706132 Dual orientation retroreflective sheeting 89 1996
* 5783120 Method for making an optical film 263 1996
* 5808794 Reflective polarizers having extended red band edge for controlled off axis color 175 1996
* 6024455 Reflective article with concealed retroreflective pattern 83 1998
 
NIPPON CARBIDE KOGYO KABUSHIKI KAISHA (1)
* 6010609 Method of making a microprism master mold 45 1998
 
LUCENT TECHNOLOGIES INC. (1)
* 5990256 Long chain branched syndiotactic vinyl aromatic polymers 3 1998
 
IDEMITSU KOSAN CO., LTD. (3)
5127158 Process for producing a printed circuit board with a syndiotactic polystyrene support 33 1990
5219940 Styrene polymer composition 44 1991
5496919 Process for production of styrene-based polymer moldings 5 1993
 
IDEMITSU PETROCHEMICAL CO., LTD. (2)
5082717 Styrene-based resin composite material 14 1989
5273830 Magnetic recording medium comprising a syndiotactic styrene-based polymer substrate, a magnetic layer and a backcoat lubricating layer each layer containing a curable phosphazine compound 28 1991
 
ROHM AND HAAS COMPANY (1)
* 5654365 Styrenic polymer composition 7 1996
 
Relfexite Corporation (1)
4332847 Method for compression molding of retroreflective sheeting and sheeting produced thereby 72 1980
 
DOW CHEMICAL COMPANY, THE, (50%) (2)
5145950 Method of storing food or plant materials by wrapping with a stretched syndiotactic polystyrene film 51 1991
5476899 Process for produce a readily slidable film 17 1993
 
AVERY DENNISON CORPORATION (2)
4486363 Method and apparatus for embossing a precision optical pattern in a resinous sheet 126 1982
4601861 Methods and apparatus for embossing a precision optical pattern in a resinous sheet or laminate 195 1984
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
MAGNA MIRRORS OF AMERICA, INC. (9)
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8083386 Interior rearview mirror assembly with display device 40 2009
9487144 Interior mirror assembly with display 0 2009
8282253 Mirror reflective element sub-assembly for exterior rearview mirror of a vehicle 12 2011
8508383 Interior rearview mirror system 8 2012
8833987 Mirror reflective element sub-assembly for exterior rearview mirror of a vehicle 1 2012
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9221399 Automotive communication system 1 2014
 
MUSE GREEN INVESTMENTS LLC (1)
* 2007/0064,098 Systems and methods for 3D rendering 14 2005
 
3M INNOVATIVE PROPERTIES COMPANY (5)
7195360 Prismatic retroreflective article and method 10 2004
7347571 Prismatic retroreflective article with fluorine- or silicon-containing prisms 8 2005
* 2006/0158,736 Prismatic retroreflective article with fluorine- or silicon-containing prisms 1 2005
7547105 Prismatic retroreflective article with cross-linked image layer and method of making same 10 2007
* 2009/0021,831 PRISMATIC RETROREFLECTIVE ARTICLE WITH CROSS-LINKED IMAGE LAYER AND METHOD OF MAKING SAME 4 2007
 
MAGNA ELECTRONICS INC. (16)
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8543330 Driver assist system for vehicle 52 2012
9352623 Trailer hitching aid system for vehicle 0 2014
9014966 Driver assist system for vehicle 4 2014
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MAGNA ELECTRONICS IN. (1)
8676491 Driver assist system for vehicle 16 2013
 
DONNELLY CORPORATION (73)
7855755 Interior rearview mirror assembly with display 160 2006
8095310 Video mirror system for a vehicle 84 2008
8194133 Vehicular video mirror system 56 2008
7871169 Vehicular signal mirror 63 2008
7826123 Vehicular interior electrochromic rearview mirror assembly 65 2009
8462204 Vehicular vision system 10 2009
8044776 Rear vision system for vehicle 83 2009
7859737 Interior rearview mirror system for a vehicle 51 2009
7898719 Rearview mirror assembly for vehicle 51 2009
8072318 Video mirror system for vehicle 82 2009
7821697 Exterior reflective mirror element for a vehicular rearview mirror assembly 64 2009
7926960 Interior rearview mirror system for vehicle 55 2009
8294975 Automotive rearview mirror assembly 25 2010
8842176 Automatic vehicle exterior light control 3 2010
7898398 Interior mirror system 53 2010
7832882 Information mirror system 47 2010
7822543 Video display system for vehicle 47 2010
7864399 Reflective mirror assembly 84 2010
8179236 Video mirror system suitable for use in a vehicle 54 2010
7916009 Accessory mounting system suitable for use in a vehicle 78 2010
7906756 Vehicle rearview mirror system 51 2010
7815326 Interior rearview mirror system 64 2010
8277059 Vehicular electrochromic interior rearview mirror assembly 19 2010
8282226 Interior rearview mirror system 14 2010
8000894 Vehicular wireless communication system 44 2010
8164817 Method of forming a mirrored bent cut glass shape for vehicular exterior rearview mirror assembly 35 2010
7918570 Vehicular interior rearview information mirror system 47 2010
8228588 Interior rearview mirror information display system for a vehicle 26 2010
8335032 Reflective mirror assembly 18 2010
8511841 Vehicular blind spot indicator mirror 9 2011
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8179586 Rearview mirror assembly for vehicle 38 2011
8063753 Interior rearview mirror system 55 2011
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9019091 Interior rearview mirror system 1 2011
8525703 Interior rearview mirror system 5 2011
8047667 Vehicular interior rearview mirror system 51 2011
8162493 Interior rearview mirror assembly for vehicle 30 2011
8121787 Vehicular video mirror system 28 2011
8095260 Vehicle information display 41 2011
8325055 Mirror assembly for vehicle 0 2011
8177376 Vehicular interior rearview mirror system 27 2011
8779910 Interior rearview mirror system 6 2011
8653959 Video mirror system for a vehicle 4 2011
8170748 Vehicle information display system 14 2012
8304711 Vehicle rearview mirror system 27 2012
8271187 Vehicular video mirror system 14 2012
9278654 Interior rearview mirror system for vehicle 0 2012
8559093 Electrochromic mirror reflective element for vehicular rearview mirror assembly 5 2012
8355839 Vehicle vision system with night vision function 3 2012
8465162 Vehicular interior rearview mirror system 5 2012
8379289 Rearview mirror assembly for vehicle 10 2012
8908039 Vehicular video mirror system 0 2012
8400704 Interior rearview mirror system for a vehicle 9 2012
8503062 Rearview mirror element assembly for vehicle 5 2012
8506096 Variable reflectance mirror reflective element for exterior mirror assembly 13 2012
8465163 Interior rearview mirror system 5 2012
8610992 Variable transmission window 3 2012
8508384 Rearview mirror assembly for vehicle 7 2012
8797627 Exterior rearview mirror assembly 6 2012
8577549 Information display system for a vehicle 4 2013
8705161 Method of manufacturing a reflective element for a vehicular rearview mirror assembly 1 2013
8608327 Automatic compass system for vehicle 2 2013
9557584 Rearview mirror assembly for vehicle 0 2013
8727547 Variable reflectance mirror reflective element for exterior mirror assembly 2 2013
8884788 Automotive communication system 2 2013
9090211 Variable reflectance mirror reflective element for exterior mirror assembly 1 2014
9073491 Exterior rearview mirror assembly 1 2014
9376061 Accessory system of a vehicle 0 2015
9545883 Exterior rearview mirror assembly 0 2015
9341914 Variable reflectance mirror reflective element for exterior mirror assembly 0 2015
9481306 Automotive communication system 0 2015
* Cited By Examiner