(under subclass 890.1) Subject matter in which the therapeutic delivery device forcably dispenses the body treating material by pressure created by osmosis or diffusion of fluid into a material or bladder which expands and compresses the body treating material to be dispensed.
(1) Note. In most of the devices osmosis occurs at least into a single physically isolated part of the device which serves as an osmotic pump.
SEE OR SEARCH CLASS
424, Drug, Bio-Affecting and Body Treating Composition,
422+, for preparations characterized by special physical form including a membrane across which osmosis or diffusion may occur in which the osmosis or diffusion bring fluid into direct contact with the medicinal composition.
CROSS-REFERENCE ART COLLECTIONS
Electronic Cross Reference Art Collections 907-921 are located in the schedule for Class 604 and have no definitions associated with them.
A search in Class 604 Cross-Reference Art Collections 907-921 is an optional search. As patents from the U.S. and other countries are published, the examiners in the European Patent Office (EPO) receive them for placement in their search file, the European Classification (ECLA) system, which is an expansion of the International Patent Classification (IPC) system. EPO examiners do not depend on the IPC printed on the issued documents for placement into their system; they reclassify each document again. All of the patents contained in these cross-reference art collections have been classified by EPO personnel.
These collections are available in electronic form only and have no definitions associated with them. The most available disclosure as to the types of documents contained in these collections is given in any notes associated with the titles.
As was previously mentioned, ECLA is an expansion of the IPC. A number of classification areas have been added to the IPC as a way of providing additional search areas to meet the needs of the EPO examiners. These additional areas in the ECLA schedule have alpha or alphanumeric characters added to the traditional IPC notations.
Cross-Reference Art Collections 907-921 are, in general a replication of subclasses in the A61 area of ECLA. At the end of each cross-reference art collection, enclosed in brackets, is the corresponding ECLA classification.
Patents (Cross-references only) can be added to these newly created collections in the traditional manner, (i.e., blue slips, miscellaneous transfer, or 14B). They can also be deleted by submitting a copy of the document along with a request to Classification.
