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Official data from INPI

RECIPIENTE

ConcedidaInvention Patent

Application data

Number

PI7901034

Type

Invention Patent

Filing

02/23/1978

Publication

-

Progress at the INPI

  1. Filing02/23/78
  2. Publication
  3. Examination
  4. Allowance10/11/83
  5. Grant03/27/84
  6. Expired05/31/94

The letters patent expired on 05/31/1994: 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: 03/27/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

TIOXIDE GROUP LTD

Inventors

M. F. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/27/1984

RPI 701

Notificação para pagamento de retribuição

#13.1

01/24/1984

RPI 692

Deferimento

#9.1

10/11/1983

RPI 677

Exigência - art. 36 da LPI

#6.1

04/26/1983

RPI 653

6.2

01/26/1982

RPI 588

Carta-patente expirada

#21.1

05/31/1994

RPI 1226

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