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

PROCESSO PARA A PREPARAÇÃO DE UMA COMPOSIÇÃO CATALÍTICA, E, PROCESSO PARA O DESPROPORCIONAMENTO DE OLEFINAS.

PublicadaInvention Patent

Application data

Number

PI8805979

Type

Invention Patent

Filing

11/16/1988

Publication

08/08/1989

Progress at the INPI

  1. Filing11/16/88
  2. Publication08/08/89
  3. Examination08/27/91
  4. Allowance03/23/99
  5. Grant07/27/99
  6. Expired12/18/12

The letters patent expired on 12/18/2012: 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: 08/08/1989. 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

C. W. (pessoa física)

NL

D. R. (pessoa física)

NL

F. J. (pessoa física)

NL

H. B. (pessoa física)

NL

Technical data

IPC Classification

Priority claims

GB

8726925 · 11/18/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

08/08/1989

RPI 981

Pedido de patente depositado

#2.1

03/28/1989

RPI 962

Carta-patente expirada

#21.1

Patente extinta em 27/07/2009

12/18/2012

RPI 2189

Concessão da patente

#16.1

07/27/1999

RPI 1490

Deferimento

#9.1

03/23/1999

RPI 1472

Exigência - art. 36 da LPI

#6.1

09/15/1998

RPI 1447

Solicitação de exame técnico

#4.1

08/27/1991

RPI 1082

Patent monitoring

Track this patent in real time.

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