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US 4,664,275 AGranted
Medical container stopper
AssigneeTerumo Kabushiki Kaisha
InventorsMasaaki Kasai, Kenji Ishikawa
Life of this patent
Estimating the term…
Abstract
A stopper for hermetically sealing an opening of a medical container. The stopper is made of a composition comprising 30 to 80% by weight of a partially cross-linked butyl rubber, 10 to 40% by weight of a thermoplastic resin, and 5 to 50% by weight of an inorganic powder.
Claims10
A stopper for hermetically sealing an opening of a medical container, formed of a composition comprising:
- 30 to 80% by weight of a partially cross-linked butyl rubber;
- 10 to 40% by weight of a thermoplastic resin;
- and plate-like
- 5 to 50% by weight of an inorganic powder.
1 more element
Dependencies are inferred from the claim text.