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Official data from INPI

PROCESSO PARA PREPARACAO DE ANTIOXIDANTES FENOLICOS

ConcedidaInvention Patent

Application data

Number

PI8107328

Type

Invention Patent

Filing

11/17/1980

Publication

08/03/1982

Progress at the INPI

  1. Filing11/17/80
  2. Publication08/03/82
  3. Examination09/18/84
  4. Allowance05/07/85
  5. Grant10/29/85
  6. Expired08/19/08

The letters patent expired on 08/19/2008: 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: 10/29/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

GOODYEAR TIRE & RUBBER [US]

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Inventors

C. H. (pessoa física)

W. H. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/29/1985

RPI 784

Notificação para pagamento de retribuição

#13.1

08/27/1985

RPI 775

Deferimento

#9.1

05/07/1985

RPI 759

Solicitação de exame técnico

#4.1

09/18/1984

RPI 726

Publicação do pedido de patente

#3.1

08/03/1982

RPI 615

Pedido de patente depositado

#2.1

12/29/1981

RPI 584

Carta-patente expirada

#21.1

Patente extinta em 12/11/96

08/19/2008

RPI 1963

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