The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 1998
Filed:
Mar. 04, 1996
Mitsuru Naito, Tsukuba, JP;
Atsushi Tajima, Tsukuba, JP;
Yoshiaki Yasuda, Kumamoto, JP;
Takashi Kuwana, Kumamoto, JP;
Abstract
Cryopreservation of primordial germ cells and germ cells, in which primordial germ cells or germ cells are separated from bird embryos before meiosis and are then suspended and frozen in a freezing medium containing a cryoprotective agent is useful for the conservation of species of birds, for the protection of rare species which are in danger of extinction and also for the production of transgenic animals, the production of novel animals having gene markers on a cellular level, the production of animals useful as disease models, the production of useful substances by genetic engineering, and the development of test methods for toxicity to germ-line cells.