Soil Additives for Promoting Seed Germination, for Prevention of Evaporation and Methods for Use
US-2018362846-A1 · Dec 20, 2018 · US
Substrate for soil improvement having a water-storing property, method for producing same, and use thereof
US8993735B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8993735-B2 |
| Application number | US-201113578321-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 10, 2011 |
| Priority date | Feb 10, 2010 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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 invention relates to a method for producing a lignin-based substrate for soil improvement having a water-storing property, characterized by the following steps: providing lignin, oxidizing the lignin in either an aqueous alkaline suspension or a pH-neutral aqueous suspension, the pH-neutral aqueous suspension being converted into an alkaline substance after the lignin has been oxidized, cross-linking the lignin in an aqueous alkaline medium using multifunctional compounds, and neutralizing, drying, and comminuting the lignin.
First claim
Opening claim text (preview).
What is claimed is: 1. Substrate for soil improvement with water-storing property comprised of lignin, characterized in that the lignin is modified at the aromatic structures as well as at the aliphatic structures by introduction of oxygen-functional groups, the oxygen-functional groups introduced by oxidation of the lignin with hydrogen peroxide or a Fenton system, the latter comprised of hydrogen peroxide and an Fe(II) salt, or a mixture of hydrogen peroxide and an Mn(II) salt, a…
Assignees
Inventors
Classifications
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 US8993735B2 cover?
- The invention relates to a method for producing a lignin-based substrate for soil improvement having a water-storing property, characterized by the following steps: providing lignin, oxidizing the lignin in either an aqueous alkaline suspension or a pH-neutral aqueous suspension, the pH-neutral aqueous suspension being converted into an alkaline substance after the lignin has been oxidized, cro…
- Who is the assignee on this patent?
- Passauer Lars, Liebner Falk, Fischer Klaus, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification C09K17/32. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 31 2015 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).