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Official data from INPI

COMPOSICAO DE OLEO LUBRIFICANTE CONTENDO UMA COMBINACAO INIBIDORA DE VERNIZ DE UM COMPOSTO DE ESTER DE POLIOL COM UM COMPOSTO NITROGENADO DE ACILA

ConcedidaInvention Patent

Application data

Number

PI7806410

Type

Invention Patent

Filing

10/03/1977

Publication

-

Progress at the INPI

  1. Filing10/03/77
  2. Publication
  3. Examination
  4. Allowance06/14/83
  5. Grant12/27/83
  6. Expired05/03/94

The letters patent expired on 05/03/1994: 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: 12/27/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

EXXON RESEARCH ENGINEERING CO

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Inventors

B. D. (pessoa física)

H. B. (pessoa física)

L. T. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/27/1983

RPI 688

Notificação para pagamento de retribuição

#13.1

10/04/1983

RPI 676

Deferimento

#9.1

06/14/1983

RPI 660

Exigência - art. 36 da LPI

#6.1

11/03/1982

RPI 628

6.2

12/22/1981

RPI 583

Pedido de certificado de adição de invenção

#5.1

10/06/1981

RPI 572

Carta-patente expirada

#21.1

05/03/1994

RPI 1222

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