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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE POLÍMERO EM FORMATO DE ESTRELA, E, COMPOSIÇÃO DE ÓLEO LUBRIFICANTE.

Arquivada/ExtintaInvention Patent

Application data

Number

PI9005390

Type

Invention Patent

Filing

10/24/1990

Publication

09/17/1991

Progress at the INPI

  1. Filing10/24/90
  2. Publication09/17/91
  3. Examination09/21/93
  4. Allowance11/10/98
  5. Grant04/27/99
  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

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Inventors

R. R. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

426,642 · 10/26/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 24/10/2010

05/21/2013

RPI 2211

Concessão da patente

#16.1

04/27/1999

RPI 1477

Republicação - classificação IPC

#15.11

ALTERADA DE C08F 293/00 C08F 212/08 C08F 236/08

12/08/1998

RPI 1457

Deferimento

#9.1

11/10/1998

RPI 1453

Exigência - art. 36 da LPI

#6.1

06/16/1998

RPI 1434

Solicitação de exame técnico

#4.1

09/21/1993

RPI 1190

Publicação do pedido de patente

#3.1

09/17/1991

RPI 1085

Pedido de patente depositado

#2.1

04/16/1991

RPI 1063

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