91,675 patents · 168 papers · 9,046 patents and 5 papers in the last 3 years.
Top assignees
- BASF SE (7,130 patents)
- Henkel AG and Co KGaA (3,319 patents)
- Rohm and Haas Co (2,686 patents)
Notable patents
- Synergistic thickener mixtures of amps polymers with other thickeners (1985)
- Water-soluble copolymer of acrylamidomethylpropanesulfonic acids salts (1982)
- Well cementing method using an AM/AMPS fluid loss additive blend (1986)
Notable papers
Top assignees
| Assignee | Patents |
|---|---|
| BASF SE | 7,130 |
| Henkel AG and Co KGaA | 3,319 |
| Rohm and Haas Co | 2,686 |
| LOreal SA | 2,242 |
| Procter and Gamble Co | 2,085 |
| Halliburton Energy Services Inc | 1,987 |
| 3M Innovative Properties Co | 1,696 |
| Konica Minolta Inc | 1,598 |
| Fujifilm Holdings Corp | 1,432 |
| Fujifilm Corp | 1,167 |
Top authors
| Author | Affiliation | Papers |
|---|---|---|
| Christopher P. Palmer | University of Montana | 5 |
| František Švec | Lawrence Berkeley National Laboratory | 5 |
| Julio San Román | Instituto de Ciencia y Tecnología de Polímeros | 5 |
| Ryo Yoshida | The University of Tokyo | 5 |
| Benjawan Boonkaew | Children's Medical Research Institute | 4 |
| Leila Cuttle | Queensland Children’s Medical Research Institute | 4 |
| Margit Kempf | Queensland Children’s Medical Research Institute | 4 |
| María Rosa Aguilar | Instituto de Ciencia y Tecnología de Polímeros | 4 |
| Roy Kimble | Queensland Children’s Medical Research Institute | 4 |
| Akihito Hashidzume | The University of Osaka | 3 |
Top patents
| Title | Year | Assignee | Citations |
|---|---|---|---|
| Synergistic thickener mixtures of amps polymers with other thickeners | 1985 | Henkel Corp | 93 |
| Water-soluble copolymer of acrylamidomethylpropanesulfonic acids salts | 1982 | Sanofi Aventis Deutschland GmbH | 83 |
| Well cementing method using an AM/AMPS fluid loss additive blend | 1986 | BJ Services Co USA | 82 |
| Cement composition with polymeric latexes prepared in the presence of amps seed | 2002 | Omnova Solutions Inc | 81 |
| AMPS copolymer emulsions with improved stability | 1993 | EXXON CHEMICAL PATENTS INC. | 51 |
Top papers
| Title | Year | Citations | Topic |
|---|---|---|---|
| Removal of toxic metal ions with magnetic hydrogels | 2009 | 411 | Adsorption and biosorption for pollutant removal |
| Organic polymer monoliths as stationary phases for capillary HPLC | 2004 | 189 | Microfluidic and Capillary Electrophoresis Applications |
| Design of a Mass Transport Surface Utilizing Peristaltic Motion of a Self-Oscillating Gel | 2008 | 147 | Hydrogels: synthesis, properties, applications |
| Antimicrobial efficacy of a novel silver hydrogel dressing compared to two common silver burn wound dressings: Acticoat™ and PolyMem Silver® | 2013 | 134 | Nanoparticles: synthesis and applications |
| Salecan-Based pH-Sensitive Hydrogels for Insulin Delivery | 2017 | 131 | Hydrogels: synthesis, properties, applications |
Patent classifications
| Code | Area | Patents |
|---|---|---|
C08F | Polymers from C=C unsaturated bonds | 25,006 |
C08L | Polymer compositions (blends) | 15,729 |
A61K | Medicinal preparations | 14,290 |
C09K | Materials for misc. applications | 11,278 |
C09D | Coatings, paints, varnishes | 10,902 |
A61Q | Cosmetics, personal care | 10,890 |
C11D | Detergents, cleaning compositions | 7,341 |
C08K | Polymer compositions (additives) | 7,138 |
C08J | Working-up of plastics | 6,939 |
Y10T | Cross-reference (technical subjects) | 6,044 |
Research topics
| Topic | Papers |
|---|---|
| Advanced Polymer Synthesis and Characterization | 1 |
| Laser Applications in Dentistry and Medicine | 1 |
| Radioactive element chemistry and processing | 1 |
Frequently asked questions
What is the molecular formula and structure of AMPS?
AMPS has the molecular formula C7H13NO4S with a molecular weight of 207.244. Its canonical name is 2-methyl-2-(prop-2-enoylamino)propane-1-sulfonic acid. The compound is also known by several synonyms including acryloyldimethyltaurine and tert-butylacrylamidesulfonic acid.
Which companies hold the most patents related to AMPS?
BASF SE is the leading patent holder with 7,130 patents related to AMPS, followed by Henkel AG and Co KGaA with 3,319 patents, and Rohm and Haas Co with 2,686 patents. Other significant patent holders include LOreal SA, Procter and Gamble Co, and Halliburton Energy Services Inc.
What are some key historical patents on AMPS technology?
Early foundational patents include a 1982 patent on water-soluble copolymers of acrylamidomethylpropanesulfonic acid salts and a 1985 patent describing synergistic thickener mixtures of AMPS polymers with other thickeners. A 1986 patent covered well cementing methods using an AM/AMPS fluid loss additive blend, and a 1993 patent disclosed AMPS copolymer emulsions with improved stability.
What research applications of AMPS are represented in recent scientific literature?
Published research on AMPS spans multiple applications including removal of toxic metal ions using magnetic hydrogels, use as stationary phases in capillary HPLC, and applications in self-oscillating gels for mass transport surfaces. AMPS-based materials have also been investigated for antimicrobial hydrogel wound dressings and pH-sensitive hydrogels for drug delivery.
What CPC classifications are most commonly associated with AMPS patents?
The most frequently cited CPC subclasses for AMPS-related patents are C08F (macromolecular chemistry; polymers) with 25,006 patents, C08L (compositions of macromolecular compounds) with 15,729 patents, and A61K (preparations for medical purposes) with 14,290 patents. Other significant classifications include C09K (technical chemistry), C09D (coating compositions), and A61Q (specific use applications).