(11) 98705-3426
TrademarkIQ iconTrademarkIQ
Back to search
Official data from INPI

USO DE POLIAMINAS POLIOLEFINICAS QUATERNIZADAS COMO DESEMULSIFICANTES

Em AnáliseInvention Patent

Application data

Number

PI8306282

Type

Invention Patent

Filing

11/19/1982

Publication

-

Progress at the INPI

  1. Filing11/19/82
  2. Publication
  3. Abandoned
  4. Allowance
  5. Grant
  6. In force

The applicant withdrew the application. The case ended without a patent.

Talk to a specialist

Latest action published by the INPI: 04/02/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DOW CHEMICAL CO [US]

See this company's full portfolio

Inventors

T. L. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Priority claims

US

442 944 · 11/19/1982

Abstract

Refere-se a emulsões de óleo e água que são rompidas pelo contato das emulsões com uma poliamina poliolefínica quaternizada, por exemplo, o aduto de cloreto de 3-cloro-2-hidroxipropiltrimetilamônio euma poliamina de polietileno.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

10.1

04/02/1985

RPI 754

3.4

08/14/1984

RPI 721

Pedido de patente depositado

#2.1

01/24/1984

RPI 692

Patent monitoring

Track this patent in real time.

Receive alerts on INPI events, decisions, and expiry dates for your portfolio.