Copolymer, rubber composition, crosslinked rubber composition, and tire
US-9181376-B2 · Nov 10, 2015 · US
Polymer and method for producing same, rubber composition containing polymer, and tire having rubber composition
US9540464B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9540464-B2 |
| Application number | US-201314379176-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 6, 2013 |
| Priority date | Mar 7, 2012 |
| Publication date | Jan 10, 2017 |
| Grant date | Jan 10, 2017 |
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.
The polymer of the present invention is a synthesized polyisoprene or an isoprene copolymer. The polymer has a number average molecular weight (Mn) of 1.5 million or more when measured by using gel permeation chromatography (GPC).
First claim
Opening claim text (preview).
The invention claimed is: 1. A polymer being a synthesized polyisoprene, the polymer having a number average molecular weight (Mn) of 1.5 million or more when measured by gel permeation chromatography (GPC), and wherein 3,4-vinyl bond content of the synthesized polyisoprene is 2% or less, and wherein the polymer contains a catalyst residue in an amount of 300 ppm or less. 2. The polymer according to claim 1 , wherein the polymer has a gel fraction of 20% o…
Assignees
Inventors
Classifications
- C08F36/08Primary
Chemistry & Metallurgy · mapped topic
Operations & Transport · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Patent family
Related publications grouped by family.
External sources
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9540464B2 cover?
- The polymer of the present invention is a synthesized polyisoprene or an isoprene copolymer. The polymer has a number average molecular weight (Mn) of 1.5 million or more when measured by using gel permeation chromatography (GPC).
- Who is the assignee on this patent?
- Bridgestone Corp
- What technology area does this patent fall under?
- Primary CPC classification C08F36/08. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 10 2017 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).