Chemistry: natural resins or derivatives; peptides or proteins; – Proteins – i.e. – more than 100 amino acid residues – Scleroproteins – e.g. – fibroin – elastin – silk – etc.
Reexamination Certificate
2011-08-30
2011-08-30
Kosson, Rosanne (Department: 1652)
Chemistry: natural resins or derivatives; peptides or proteins;
Proteins, i.e., more than 100 amino acid residues
Scleroproteins, e.g., fibroin, elastin, silk, etc.
C530S357000, C530S415000, C424S422000
Reexamination Certificate
active
08008439
ABSTRACT:
A biodegradable biopolymer material consists of silk fibroin from domesticated silkworm; silk fibroin from wild silkworm; a composite material comprising silk fibroin from domesticated silkworm and silk fibroin from wild silkworm; or a composite material comprising either silk fibroin from domesticated silkworm or silk fibroin from wild silkworm and at least one secondary substance selected from the group consisting of cellulose, chitin, chitosan, chitosan derivatives, keratin from wool and polyvinyl alcohol. The material may be prepared by, for instance, casting an aqueous solution of domesticated silkworm silk fibroin on the surface of a substrate and then cast drying the applied solution. The biodegradable biopolymer material is effectively used as, for instance, a metal ion-adsorbing material, a sustained release substrate for a useful substance such as a medicine, a biological cell-growth substrate and a biodegradable water-absorbing material.
REFERENCES:
patent: 99630 (1870-02-01), Brewster
Baroni, “Determination of fibers in mixed textiles, wool and silk of the domestic silkworm: wool and tussah silk,” La Seta 46(1):181-184, 1940 (in Italian).
English translation of Baroni, “Determination of fibers in mixed textiles, wool and silk of the domestic silkworm: wool and tussah silk,” La Seta 46(1):181-184, 1940.
Encyclopedia Britannica Online, definition of “gel,” http://www.britannica.com/EBchecked/topic/227894/gel, printed on Apr. 23, 2010.
Kweon et al., “Structural and thermal characteristics ofAntheraea pernyisilk fibroin/chitosan blend film,” Polymer 42:6651-6656, 2001.
Tsukuda et al., Physical and chemical properties of tussah silk fibroin films, J Polymer Sci: Part B: Polymer Physics 32:1407-1412, 1994.
GenBank Record No. AAC32606,Antheraea pernyiFibroin, Complete Protein Sequence, Dec. 7, 2000.
Giuliano Freddi et al., “Silk Fibroin/Cellulose Blend Films: Preparation, Structure, and Physical Properties,” Journal of Applied Polymer Science, vol. 56, 1995, pp. 1537-1545.
Shigehiro Hirano et al., “The preparation and applications of functional fibres from crab shell chitin,” Journal of Biotechnology, vol. 70, 1999, pp. 373-377.
Motoko Iwaoka et al., “Studies on Composite Fibers Produced from Fibroin of Wild Silkmoths and Cellulose,” Journal of Inset Biotechnology and Sericology, vol. 71, 2002, pp. 157-160.
K. Y. Lee et al., “Antithrombogenicity and Surface Properties of Silk Fibroin/S-Carboxymethyl Kerateine Blend Films,” Proceedings of the 9th International Wool Textile Research Conference, vol. II: Wool Structure, Protein Chemistry, Fine Animal Fibres, 1995, 8 pages.
Youngcheng Liu et al., “Blend Membrane of Regenerated Silk Fibroin, Poly(vinyl alcohol), and Peroxidase and Its Application to a Ferrocene-Mediating Hydrogen Peroxide Sensor,” Journal of Applied Polymer Science, vol. 61, 1996, pp. 641-647.
Yoshiaki Matsunaga, “Change of Lattice Constants of Fibroin by Perfect Drying,” Memoirs of the College of Science, Kyoto Imperial University, Series A, vol. XX, No. 4, Jul. 1937, cover and pp. 157-172.
Norihiko Minoura et al., “Physico-chemical properties of silk fibroin membrane as a biomaterial,” Biomaterials, vol. 11, Aug. 1990, pp. 430-434.
Sung Jin Park et al., “Structural Changes and Their Effect on Mechanical Properties of Silk Fibroin/Chitosan Blends,” Journal of Applied Polymer Science, vol. 74, 1999, pp. 2571-2575.
Xian-ming Qu et al., “Insect Immunity: Isolation and Structure of Cecropins B and D from Pupae of the Chinese Oak Silk Moth,Anthemea pernyi,” European Journal of Biochemistry, vol. 127, Issue 1, 1982, citation and abstract only (1 page).
Xian-ming Qu et al., “Insect Immunity: Isolation and Structure of Cecropins B and D from Pupae of the Chinese Oak Silk Moth,Anthemea pernyi,” European Journal of Biochemistry, vol. 127, Issue 1, 1982, pp. 219-224.
Hideki Shiozaki et al., “Salt-Catalyzed Addition Reaction of Epoxy Compounds with Various Silk Fibroins,” Die Angewandte Makromolekulare Chemie, vol. 64, Issue 1, 1977, pp. 1-18.
Masuhiro Tsukada et al., “Structure and Compatibility of Poly(vinyl Alcohol)-Silk Fibroin (PVA/SF) Blend Films,” Journal of Polymer Science: Part B: Polymer Physics, vol. 32, 1994, pp. 243-248.
Masuhiro Tsukada et al., “Physical Properties and Phase Separation Structure ofAntheraea pernyi/Bombyx moriSilk Fibroin Blend Films,” Journal of Polymer Science: Part B: Polymer Physics, vol. 32, 1994, pp. 1175-1181.
Masuhiro Tsukada et al., “Structural Changes of Silk Fibers Induced by Heat Treatment,” Journal of Applied Polymer Science, vol. 45, 1992, pp. 1945-1953.
Masuhiro Tsukada et al., “Structure and Physical Properties of Epoxide-Treated Tussah Silk Fibers,” Journal of Applied Polymer Science, vol. 44, 1992, pp. 2203-2211.
Masuhiro Tsukada et al., “Physical Properties of Silk Fibers Treated with Ethylene Glycol Diglycidyl Ether by the Pad/Batch Method,” Journal of Applied Polymer Science, vol. 50, 1993, pp. 1841-1849.
Masuhiro Tsukada et al., “Physical Characteristics of Silk Fibers Modified with Dibasic Acid Anhydrides,” Journal of Applied Polymer Science, vol. 51, 1994, pp. 345-352.
Guang Yang et al., “Structure and microporous formation of cellulose/silk fibroin blend membranes I. Effect of coagulants,” Journal of Membrane Science, vol. 177, pp. 153-161.
Arai Takayuki
Tsukada Masuhiro
Arent & Fox LLP
Kosson Rosanne
National Institute of Agrobiological Sciences
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