US3535299A - Process for the polymerization
US3535299A US3535299DA US3535299A US 3535299 A US3535299 A US 3535299A US 3535299D A US3535299D A US 3535299DA US 3535299 A US3535299 A US 3535299A Authority US United States Prior art keywords cl polymerization solid oh hydroxychloride Prior art date 1966-10-21 Legal status (The legal status is an assumption and is not a legal conclusion.
The inventive polycarbamide resins, and coatings comprising such resins, have favorable physical characteristics compared to polyurethane-based coatings. They are suitable for DTM applications and are low VOC. By “low VOC” it is meant less than 225 g/l, as defined by current United States Environmental Protection Agency (USEPA) regulations.
213-Right of Priority of Foreign Application
If an inventor has filed an application in France on October 4, 1981, and an identical application in the United Kingdom on March 3, 1982, and then files in the United States on February 2, 1983, the inventor is not entitled to the right of priority at all; the inventor would not be entitled to the benefit of the date of the French application since this application was filed more than twelve months before the U.S. application, and the inventor would not be entitled to the benefit of the
The current invention provides a method to form a stable blend of polyacrylamide water-in-oil emulsion and breaker surfactants such as silicon polyether copolymer and linear or branched alcohol ethoxylate surfactants.
US8007678B2 - Textile yarn sizing composition
US8007678B2 US11/722,385 US72238505A US8007678B2 US 8007678 B2 US8007678 B2 US 8007678B2 US 72238505 A US72238505 A US 72238505A US 8007678 B2 US8007678 B2 US 8007678B2 Authority US United States Prior art keywords sizing fibres yarns cotton liquor Prior art date 2004-12-22 Legal status (The legal status is an assumption and is not a legal conclusion.
Digging deeper, roughly 75% of the patent applications granted by the EPO are validated by applicants in the following “top three” jurisdictions: France, Germany and the United Kingdom.
Rights of Co-Owners to License Patent Rights
France. Article L613-29 of the Intellectual Property Code sets out a comprehensive scheme for addressing rights of co-owners of a patent if they have not made their own agreement, including provisions that joint ownership of a patent application or of a patent shall be governed by the following provisions:
A PCT patent application must be filed within 12 months of the first filing of a national patent application (such as a U.S. provisional or non-provisional patent application). An example application process flow is provided in figure 1 below. The example of in figure 1 shows that at point A a U.S. Patent Application was filed.
Patent Maintenance Fees, Online Patent Renewals & Patent
However, these vary, and some patent offices have less frequent payment intervals (such as the US, where fees are payable at 3.5, 7.5 and 11.5 years from grant). Payment of fees is generally required in advance of the end of the current patent term (usually the anniversary of filing or grant date) in order to keep the patent or application
Global Polyacrylamide Market was valued at US$ 3.50 Bn in 2025 and is expected to reach US$ 4.74 Bn by 2027, at a CAGR of 7.9 % during a forecast period. The objective of the report is to present a comprehensive assessment of the market and contains thoughtful insights, facts, historical data, industry-validated market data and projections with a suitable set of assumptions and methodology.
Rights of Co-Owners to License Patent Rights
France. Article L613-29 of the Intellectual Property Code sets out a comprehensive scheme for addressing rights of co-owners of a patent if they have not made their own agreement, including provisions that joint ownership of a patent application or of a patent shall be governed by the following provisions:
US2632058A US785697A US78569747A US2632058A US 2632058 A US2632058 A US 2632058A US 785697 A US785697 A US 785697A US 78569747 A US78569747 A US 78569747A US 2632058 A US2632058 A US 2632058A Authority US United States Prior art keywords pulse pulses code group binary code Prior art date 1946-03-22 Legal status (The legal status is an assumption and is not a legal conclusion.
- What is anionic polyacrylamide (Apam)?
- 1. Introduction Anionic polyacrylamide (APAM) is a kind of organic high-molecular polymer with high hydrophilicity and viscosity, which is easily dissolved in water [ , , ].
- Does anionic polyacrylamide improve coagulation-flocculation process?
- Aguilar, M. I. et al. Improvement of coagulation-flocculation process using anionic polyacrylamide as coagulant aid. Chemosphere 58, 47–56 (2005). Muller, G., Fenyo, J. C. & Selegny, E. High molecular weight hydrolyzed polyacrylamides.
- What is high molecular weight polyacrylamide (PAM)?
- Provided by the Springer Nature SharedIt content-sharing initiative High molecular weight (106–3 × 107 Da) polyacrylamide (PAM) is commonly used as a flocculant in water and wastewater treatment, as a soil conditioner, and as a viscosity modifier and friction reducer in both enhanced oil recovery and high volume hydraulic fracturing.
- What is polyacrylamide (PAM) used for?
- npj Clean Water 1, Article number: 17 ( 2018 ) Cite this article High molecular weight (10 6 –3 × 10 7 Da) polyacrylamide (PAM) is commonly used as a flocculant in water and wastewater treatment, as a soil conditioner, and as a viscosity modifier and friction reducer in both enhanced oil recovery and high volume hydraulic fracturing.
