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Official data from INPI

ANTIOXIDANTE PARA OLEOS LUBRIFICANTES

Em AnáliseInvention Patent

Application data

Number

PI8003141

Type

Invention Patent

Filing

05/31/1979

Publication

-

Progress at the INPI

  1. Filing05/31/79
  2. Publication
  3. Examination01/11/83
  4. Allowance09/04/84
  5. Grant03/26/85
  6. Terminated06/21/88

The patent was granted on 03/26/1985 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 06/21/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

UNIROYAL INC

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Inventors

B. B. (pessoa física)

L. F. (pessoa física)

N. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

06/21/1988

RPI 922

Concessão da patente

#16.1

03/26/1985

RPI 753

Notificação para pagamento de retribuição

#13.1

12/26/1984

RPI 740

Deferimento

#9.1

09/04/1984

RPI 724

Exigência - art. 36 da LPI

#6.1

01/17/1984

RPI 691

Solicitação de exame técnico

#4.1

01/11/1983

RPI 638

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