Diffractive microstructure and a method of producing the same

Arto Maaninen (Inventor), Pia Qvintus-Leino (Inventor), Soili Peltonen (Inventor)

    Research output: PatentPatent

    Abstract

    Diffractive microstructure comprising micro-protrusions or microgrooves or a combination thereof and method of producing the same. The microstructure is formed in a layer of a thermoplastic carbohydrate polymer or a polymer derived from a carbohydrate material, said polymer having a glass transition point of less than 210 ºC. The thermoplastic polymer is preferably selected from the group of native starch, dextrin, native hemicellulose, native cellulose, poly(lactic acid), polylactides, polycaprolactone, starch derivatives, dextrin derivatives, hemicellulose derivatives, cellulose derivatives, and mixtures thereof. The invention provides an inexpensive and reliable way of incorporating into the products safety markings, which allow for visual inspection or detection, such as holograms and barcodes.

    Patent family as of 6.9.2021
    CN101952323 A 20110119 CN200880127315 20081217      
    CN101952323 B 20150506 CN200880127315 20081217      
    DE602008062087 D1 20200227 DE200860062087T 20081217      
    EP2222711 A1 20100901 EP20080865555 20081217      
    EP2222711 A4 20170927 EP20080865555 20081217      
    EP2222711 B1 20200205 EP20080865555 20081217      
    GB200725100 A0 20080130 GB20070025100 20071221      
    GB2455805 A1 20090624 GB20070025100 20071221      
    GB2455805 B2 20091118 GB20070025100 20071221      
    IN02370KN2010 A 20101001 IN2010KN02370 20100629      
    IN279144 B 20170113 IN2010KN02370 20100629      
    JP2011510833 T2 20110407 JP20100538810T 20081217      
    JP5637861 B2 20141210 JP20100538810T 20081217      
    US10744704 BB 20200818 US20080809510 20081217      
    US2010327485 AA 20101230 US20080809510 20081217      
    WO09080879 A1 20090702 WO2008FI50755 20081217

    Link to current patent family on right 

    Original languageEnglish
    Patent numberEP2222711
    IPCD21H 21/ 40 A I
    Priority date17/12/08
    Publication statusPublished - 1 Sep 2010
    MoE publication typeH1 Granted patent

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