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Official data from INPI

POLÍMERO HIDROGENADO MODIFICADO EM FORMA DE ESTRELA, PROCESSO PARA SUA PREPARAÇÃO E COMPOSIÇÃO DE ÓLEO LUBRIFICANTE, CONCENTRADO OLEOSO E COMBUSTÍVEL HIDROCARBONETO LÍQUIDO CONTENDO O DITO POLÍMERO.

ConcedidaInvention Patent
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Application data

Number

PI8007401

Type

Invention Patent

Filing

11/13/1980

Publication

-
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Progress at the INPI

  1. Filing11/13/80
  2. Publication
  3. Examination07/26/83
  4. Allowance09/10/85
  5. Grant08/26/86
  6. Expired12/26/95

The letters patent expired on 12/26/1995: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 08/26/1986. 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

E. R. (pessoa física)

Technical data

IPC Classification

C08F 279/02C08F 287/00C10L 1/00C10M 149/00C10M 149/10

Priority claims

GB

7939785 · 11/16/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/26/1986

RPI 827

Concessão anulada

#16.2

07/29/1986

RPI 823

Concessão da patente

#16.1

04/29/1986

RPI 810

Notificação para pagamento de retribuição

#13.1

01/14/1986

RPI 795

Deferimento

#9.1

09/10/1985

RPI 777

Exigência - art. 36 da LPI

#6.1

11/20/1984

RPI 735

Exigência - art. 36 da LPI

#6.1

01/31/1984

RPI 693

Solicitação de exame técnico

#4.1

07/26/1983

RPI 666

Carta-patente expirada

#21.1

12/26/1995

RPI 1308

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