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Official data from INPI

PROCESSO DE PREPARAÇÃO DE ADUTOS DE ÓXIDO DE ALQUILENO DE COMPOSTOS ORGÂNICOS QUE POSSUEM ÁTOMOS DE HIDROGÊNIO ATIVO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9002317

Type

Invention Patent

Filing

05/17/1990

Publication

08/06/1991

Progress at the INPI

  1. Filing05/17/90
  2. Publication08/06/91
  3. Examination08/10/93
  4. Allowance02/17/99
  5. Grant07/27/99
  6. Expired01/15/13

The letters patent expired on 01/15/2013: 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: 01/15/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

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Inventors

R. K. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

354,050 · 05/19/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 17/05/2010

01/15/2013

RPI 2193

Concessão da patente

#16.1

07/27/1999

RPI 1490

Deferimento

#9.1

02/17/1999

RPI 1467

Exigência - art. 36 da LPI

#6.1

01/28/1997

RPI 1365

Solicitação de exame técnico

#4.1

08/10/1993

RPI 1184

Publicação do pedido de patente

#3.1

08/06/1991

RPI 1079

Pedido de patente depositado

#2.1

09/25/1990

RPI 1034

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