Requirements for Unity of Application - Japan Patent Office

[Example 46]
[Title of the Invention]
Optical fiber cable and process of manufacturing
[Claims]
1. Optical fiber cable comprising optical fiber core 3 on a protective tube 4’ and at least one
layer of a tension material 7 on the outside, …contacting on the outside of the tension
material 7 a co-axially extruded metal pipe 8. (See Figure 1)
2. Production process of a cable having envelope layer arranged on the twisted cable
materials comprising the steps of: forming metal pipe 8 which is larger than the cable
part 7 on the outside of twisted cable part 7, by continuous extrusion, deforming the
extruded pipe until it contacts the cable part 7, …thereby affixing the envelope layer 8’
arranged on the twisted cable materials. (See Figure 2)
[Excerpt from Detail Description of the Invention and Drawings]
This invention concerns the optical cable that is combustible and able to withstand the
high pressure and corrosiveness of the seawater, and it can be used in a long length, and the
process of the production of this optical cable. This production process can be applied in
manufacturing of items other than optical fiber such as combustible cables and ropes.
In the prior art of production where the pipe 8 is fabricated by welding a copper tape, the
disadvantage is that parts contained in the pipe 8 is subjected to am adversary effect from the
heat of welding.
Figure 1
Figure 2
[Explanation]
By means of related invention (Claim 2), the “process of cable production,” the specified
invention (Claim 1), the “optical fiber cable” as well as “combustible cable or rope” is
manufactured, and the related invention, the “process of cable production” is appropriate for
the production of the specified invention, the “optical fiber cable.” Therefore, both inventions
have the relationship between the product and process of manufacturing the product.
[Concerned Section]
Patent Law Section 37(iii)
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