Water-absorbent resin composition, absorbent material and absorbent article
US-2024424473-A1 · Dec 26, 2024 · US
Hydrogel object and method of manufacturing hydrogel object
US11904058B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11904058-B2 |
| Application number | US-201916557570-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 30, 2019 |
| Priority date | Jul 22, 2015 |
| Publication date | Feb 20, 2024 |
| Grant date | Feb 20, 2024 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A hydrogel object includes a polymer and water, wherein the rate of mass loss is not greater than 20 percent by mass when the hydrogel object is left undone for one week at 25 degrees C. and relative humidity of 50 percent.
First claim
Opening claim text (preview).
What is claimed is: 1. A hydrogel object comprising: a polymer; and water, wherein a rate of mass loss is not greater than 20 percent by mass when the hydrogel object is left undone for one week at 25 degrees C. and relative humidity of 50 percent, and wherein the hydrogel object is an internal organ model. 2. The hydrogel object according to claim 1 , wherein a stress under 80 percent compression of the hydrogel object is 0.01-5.0 MPa. 3. The hydrogel object according to claim 1 , further comprising a humectant in an amount of 10-90 percent by mass. 4. The hydrogel object according to claim 3 , wherein the humectant includes glycerin. 5. The hydrogel object according to claim 1 , further comprising a humectant, wherein density of the humectant increases from a center to a surface of the hydrogel object. 6. The hydrogel object according to claim 1 , wherein the hydrogel object includes multiple areas where compression stress values are different. 7. The hydrogel object according to claim 1 , wherein the rate of mass loss is not greater than 5 percent by mass. 8. The hydrogel object according to claim 1 , wherein a surface of the hydrogel object has a film. 9. The hydrogel object according to claim 8 , wherein water vapor transmission rate of the film is not greater than 500 g/m 2 ·d. 10. The hydrogel object according to claim 8 , wherein oxygen transmission rate of the film is not greater than 100,000 cc/m 2 /hr/atm. 11. The hydrogel object according to claim 8 , wherein a difference of Young's modulus between the hydrogel object before the film is formed and the hydrogel object after the film is formed is not less than 0.01 MPa. 12. The hydrogel object according to claim 1 , wherein a decrease rate of light transmission of the hydrogel object is not greater than 20 percent after the hydrogel object is left undone for one week at 25 degrees C. and relative humidity of 50 percent. 13. The hydrogel object according to claim 1 , further comprising a mineral.
Assignees
Inventors
Classifications
- A61L15/60Primary
Liquid-swellable gel-forming materials, e.g. super-absorbents · CPC title
using individual droplets, e.g. from jetting heads · CPC title
Materials specially adapted for additive manufacturing · CPC title
Products made by additive manufacturing · CPC title
Alcohols; Metal alcoholates · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11904058B2 cover?
- A hydrogel object includes a polymer and water, wherein the rate of mass loss is not greater than 20 percent by mass when the hydrogel object is left undone for one week at 25 degrees C. and relative humidity of 50 percent.
- Who is the assignee on this patent?
- Ricoh Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification A61L15/60. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Feb 20 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).