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

APARELHO PARA CONTACTAÇÃO DE GÁS COM LÍQUIDO, E, PROCESSO PARA A REMOÇÃO DE H2S DE UMA MISTURA GASOSA ÁCIDA CONTENDO H2S

PublicadaInvention Patent

Application data

Number

PI8700214

Type

Invention Patent

Filing

01/20/1987

Publication

12/01/1987

Progress at the INPI

  1. Filing01/20/87
  2. Publication12/01/87
  3. Examination05/15/90
  4. Allowance11/30/93
  5. Grant06/28/94
  6. Expired07/29/08

The letters patent expired on 07/29/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 12/01/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

See this company's full portfolio

Inventors

A. D. (pessoa física)

NL

G. A. (pessoa física)

NL

M. S. (pessoa física)

NL

Technical data

IPC Classification

Priority claims

GB

8601359 · 01/21/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

12/01/1987

RPI 893

Pedido de patente depositado

#2.1

05/12/1987

RPI 864

Carta-patente expirada

#21.1

Patente extinta em 20/01/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

06/28/1994

RPI 1230

Deferimento

#9.1

11/30/1993

RPI 1200

Exigência - art. 36 da LPI

#6.1

05/19/1992

RPI 1120

Solicitação de exame técnico

#4.1

05/15/1990

RPI 1018

Patent monitoring

Track this patent in real time.

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