IP Library Granted Patent US 12685666
Granted Patent B2
US 12685666 · App. 18/726,575 · Granted Jul 21, 2026

Condom and method for manufacturing same

Inventors: Yuuki Sayama (Tokyo, JP); Iwao Endo (Tokyo, JP)
Assignee: Okamoto Industries, Inc.
A61F6/04A61F2240/00
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Quick Facts
Patent No.
US 12685666
App. No.
18/726,575
Granted
Jul 21, 2026
Kind
B2
Abstract

A decline in viscosity of a first lubricant due to perspiration, pressure of insertion, thrusting, and the like during coitus is prevented and, a high adherence with a penis is obtained. In a condom, lubricants are added to a condom main body, wherein the lubricants include a first lubricant and a second lubricant, the first lubricant is made of a silicone oil having a higher viscosity than a viscosity of the second lubricant and is provided on an inner peripheral surface of at least a tip part of the condom main body, and the second lubricant is provided on an outer peripheral surface of at least the tip part of the condom main body.

Claims (11)

1 . A condom comprising:

a condom main body; and

lubricants applied to the condom main body, wherein

the lubricants include a first lubricant, a second lubricant, and a third lubricant,

the first lubricant is made of a silicone oil having a higher viscosity than a viscosity of the second lubricant and is provided on an inner peripheral surface of at least a tip part of the condom main body, and

the second lubricant is provided on an outer peripheral surface of at least the tip part of the condom main body and the second lubricant is permeable from an outer surface to an inner surface of the condom main body, and

the third lubricant is made of a silicone oil having a higher viscosity than the viscosity of the second lubricant and is provided on an outer side of the second lubricant.

2 . A method for manufacturing a condom including a condom main body and lubricants applied to the condom main body, the method comprising:

a winding step of winding the condom main body to form the condom main body into a flat shape; and

a filling step of supplying the lubricants to the wound condom main body,

wherein in the filling step, an inner peripheral surface of at least a tip part of the condom main body is filled with a first lubricant, an outer peripheral surface of at least the tip part of the condom main body is filled with a second lubricant, after the second lubricant being filled, the outer peripheral surface of at least the tip part of the condom main body is filled with a third lubricant made of a silicone oil with a higher viscosity than a viscosity of the second lubricant so as to sandwich the second lubricant, the first lubricant is made of a silicone oil having a higher viscosity than the viscosity of the second lubricant, and the second lubricant is permeable from an outer surface to an inner surface of the condom main body.