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Official data from INPI

PROCESSO PARA PRODUZIR UMA DIFENILAMINA ESTIRENADA

ConcedidaInvention Patent

Application data

Number

PI7806286

Type

Invention Patent

Filing

10/07/1977

Publication

-

Progress at the INPI

  1. Filing10/07/77
  2. Publication
  3. Examination
  4. Allowance04/12/83
  5. Grant10/25/83
  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: 10/25/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

GOODYEAR TIRE & RUBBER

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Inventors

S. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/25/1983

RPI 679

Notificação para pagamento de retribuição

#13.1

08/30/1983

RPI 671

Deferimento

#9.1

04/12/1983

RPI 651

Exigência - art. 36 da LPI

#6.1

09/14/1982

RPI 621

6.2

12/22/1981

RPI 583

Carta-patente expirada

#21.1

05/03/1994

RPI 1222

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