Requirements for Unity of Application - Japan Patent Office

[Example 61]
[Title of the Invention]
Cassette and a mechanism to insert and retrieve the cassette
[Claims]
1. A cassette, comprising a removable cover (16, 18) protection a projection mask (14), one
of which (16) is equipped with a gas passage way (68) in and out of the cassette, and a
normal closed valve in said gas passage way. (See Figure 1)
2. Cassette insertion/retrieval mechanism for projection equipment designed to place
protective covers (16, 18) over the mask (14) of the cassette, protect the mask (14) from
the atmosphere by evacuation of the cassette, place the cassette in the receptacle of the
projector, releasing the vacuum upon reaching the receptacle, remove the covers (16, 18),
advancing the cassette to the projection position. Upon completion of projection, the
mechanism returns the cassette to the receptacle, replaces the covers (16, 18) and
re-evacuates the cassette before ejecting it out of the projection equipment. (See Figure 2)
[Excerpt from Detail Description of the Invention and Drawings]
This invention concerns handles the projection mask and masking image of the
semiconductor projected on the silicone wafers. The projection mask of this process requires
protection covers to keep out the particles, necessitating the opening of the covers inside the
projection equipment.
Figure 1 Figure 2
[Explanation]
The process of the related invention (Claim 2) enables placement and retrieval of the
cassette in and out of the projection equipment as well as removal and replacement of the
cassette covers in order to enable the function of the cassette of the specified invention (Claim
1).
Therefore, the two inventions have a relationship of the product and a process for
handling the product.
[Concerned Section]
Patent Law Section 37(iii).
105