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Official data from INPI

PROCESSO PARA BENEFICIAMENTO DE UM ESTOQUE ALIMENTADOR CONTENDO ENXOFRE.

Arquivada/ExtintaInvention Patent

Application data

Number

PI9005915

Type

Invention Patent

Filing

11/22/1990

Publication

09/24/1991

Progress at the INPI

  1. Filing11/22/90
  2. Publication09/24/91
  3. Examination09/21/93
  4. Allowance12/08/98
  5. Grant08/10/99
  6. Expired05/21/13

The letters patent expired on 05/21/2013: 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: 05/21/2013. 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

F. K. (pessoa física)

NL

F. M. (pessoa física)

NL

I. M. (pessoa física)

NL

J. L. (pessoa física)

NL

K. K. (pessoa física)

NL

Technical data

IPC Classification

Priority claims

GB

8926555.7 · 11/24/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 22/11/2010

05/21/2013

RPI 2211

Concessão da patente

#16.1

08/10/1999

RPI 1492

Deferimento

#9.1

12/08/1998

RPI 1457

Exigência - art. 36 da LPI

#6.1

07/07/1998

RPI 1437

Solicitação de exame técnico

#4.1

09/21/1993

RPI 1190

Publicação do pedido de patente

#3.1

09/24/1991

RPI 1086

Pedido de patente depositado

#2.1

05/07/1991

RPI 1066

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