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Official data from INPI

COMPOSIÇÃO DE ÓLEO LUBRIFICANTE, COPOLÍMERO DE ETILENO SATURADO, CONCENTRADO, E, PROCESSO PARA PREPARAR UM TERPOLÍMERO DE ETILENO COMPLETAMENTE SATURADO.

ConcedidaInvention Patent

Application data

Number

PI8000072

Type

Invention Patent

Filing

01/07/1980

Publication

-

Progress at the INPI

  1. Filing01/07/80
  2. Publication
  3. Examination12/14/82
  4. Allowance08/06/85
  5. Grant03/25/86
  6. Expired05/16/95

The letters patent expired on 05/16/1995: 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: 03/25/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Exxon Research And Engineering Company

US

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Inventors

S. G. (pessoa física)

Technical data

IPC Classification

Priority claims

US

002.023 · 01/09/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/25/1986

RPI 805

Notificação para pagamento de retribuição

#13.1

12/10/1985

RPI 790

Deferimento

#9.1

08/06/1985

RPI 772

Exigência - art. 36 da LPI

#6.1

10/23/1984

RPI 731

Exigência - art. 36 da LPI

#6.1

02/14/1984

RPI 695

Pedido de certificado de adição de invenção

#5.1

05/31/1983

RPI 658

Solicitação de exame técnico

#4.1

12/14/1982

RPI 634

Carta-patente expirada

#21.1

05/16/1995

RPI 1276

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