Sulfated polysaccharide
CA 1338230 C · Owner: Korenaga, Hiroshi · Inventors: Tanaka, Noriko; Inoue, Kazuhiro; Ogawa, Hidemasa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sulfated polysaccharide DS4152 useful as an angiogenesis inhibitor or antitumor agent is provided selectively. As the sodium salt, it has the following physicochemical characteristics. Molecular weight by the gel filtration method: 29,000 3,000. Elemental analysis: C: 24.42 - 25.76%, H: 3.34 - 3.98% N:, 0.51 - 0.89%, S: 10.6 - 11.7% and P: 0.77 - 1.06%. Sugar and protein contents: Sugar content (%): 57 3 (by phenol sulfuric acid method; standard: galactose). Protein content (%): 1 0.5 (by the Lowry-Folin's method; standard: bovine serum albumin). Specific rotatory power .alpha. ?: -37° 1° (0.5% aq. solution). Characteristic absorption bands in infrared absorption spectrum: 1240, 840 …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted April 2, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 2, 2013.
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Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.