Liquid crystalline film with broadened reflection bandwidth...

Stock material or miscellaneous articles – Liquid crystal optical display having layer of specified... – With viewing layer of specified composition

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C428S001100, C428S001310, C349S096000, C349S115000, C252S299010, C252S585000

Reexamination Certificate

active

11293344

ABSTRACT:
Reflective liquid crystalline polymer films having increased bandwidth have a single layer of liquid crystalline material with short, long, and medium pitch of the helical molecular structure of the liquid crystalline polymer. The films are easily produced by a readily reproducible and economic process of low complexity.

REFERENCES:
patent: 4293435 (1981-10-01), Portugall et al.
patent: 4637896 (1987-01-01), Shannon
patent: 5235443 (1993-08-01), Barnik et al.
patent: 6099758 (2000-08-01), Verrall et al.
patent: 6177216 (2001-01-01), Broer et al.
patent: 6573963 (2003-06-01), Ouderkirk et al.
patent: 6669999 (2003-12-01), Hsieh et al.
patent: 2002/0012766 (2002-01-01), Faris et al.
patent: 19726051 (1998-12-01), None
patent: 19842701 (1999-04-01), None
patent: 0302619 (1989-02-01), None
patent: 0358208 (1990-03-01), None
patent: 0446912 (1991-09-01), None
patent: 0601483 (1994-06-01), None
patent: 0606939 (1994-07-01), None
patent: 0606940 (1994-07-01), None
patent: 0617111 (1994-09-01), None
patent: 0631157 (1994-12-01), None
patent: 0685749 (1995-12-01), None
patent: 0875525 (1998-11-01), None
patent: 0881509 (1998-12-01), None
patent: 0885945 (1998-12-01), None
patent: 0982605 (2000-03-01), None
patent: 1046692 (2000-10-01), None
patent: 1059282 (2000-12-01), None
English Derwent Abstract AN1999-037051 (04); corres. to DE 197 26 051 A1.
English Derwent Abstract AN1999-183381 (16); corres. to DE 19842701 A1.
R. Maurer et al., SID 90 DIGEST, “Polarizing Color Filters Made From Cholesteric LC Silicones”, 1990, pp. 110-113.
English Derwent Abstract, AN1998-559398 (48) . Corres. to EP 0875525 A1.
English Derwent Abstract AN1990-076958 (11); Corres. to EP 0358208 A2.
English Derwent Abstract AN1994-184914 (23); Corres. to EP 0601483 A1.
English Derwent Abstract AN1995-031733 (05); Corres. to EP 0631157 A1.
English Derwent Abstract AN2001-041728 (06); Corres. to EP 1059282 A1.
English Derwent Abstract AN1991-275546 (08); Corres. to EP 0446912 A1.
English Derwent Abstract AN2000-681133 (67); Corres. to EP 1046692 A1.
English Derwent Abstract AN1996-012531 (02); Corres. to EP 0685749.
Ishihara et al., “Preparation and Properties of Optical Notch Filters of Cholesteric Liquid Crystals”, POLYMER, vol. 29, 1988, pp. 2141-2145.
Mazkedian et al., “On the Circular Dichroism and Rotatory Dispersion In Cholesteric Liquid Crystals With A Pitch Gradient”, Le Journal De Physique, 37, 1976, p. 731.
Hajdo et al., “Theory of Light Reflection by Cholesteric Liquid Crystals Possessing A Pitch Gradient”, J. Opt. Soc. Am., vol. 69, No. 7, Jul. 1979, p. 1017.
Vill et al., database published under the name “LiqCryst”, corres. to English Abstract.
Maurer et al., “Cholesteric Reflectors with a Color Pattern”, SID International Symposium Digest of Technical Papers, vol. 25, San Jose, Jun. 14-16, 1994, pp. 399-402.
Portugall et al., “Synthesis and Phase Behaviour of Liquid Crystalline Polyacrylates”, Makromol. Chem., 183, 1982, p. 2311.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Liquid crystalline film with broadened reflection bandwidth... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Liquid crystalline film with broadened reflection bandwidth..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid crystalline film with broadened reflection bandwidth... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3850351

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.