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Official data from INPI

ESTOJO

Em AnáliseInvention Patent

Application data

Number

PI7902161

Type

Invention Patent

Filing

04/11/1978

Publication

-

Progress at the INPI

  1. Filing04/11/78
  2. Publication
  3. Examination
  4. Allowance05/24/83
  5. Grant11/29/83
  6. Expired06/21/94

The letters patent expired on 06/21/1994: 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: 06/04/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SONY CORP [JP]

See this company's full portfolio

Inventors

T. [. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Cessão de direito de exploração

#22.1

06/04/1985

RPI 763

16.3

02/14/1984

RPI 695

Concessão da patente

#16.1

11/29/1983

RPI 684

Notificação para pagamento de retribuição

#13.1

09/27/1983

RPI 675

Deferimento

#9.1

05/24/1983

RPI 657

8.1

12/14/1982

RPI 634

15.0

08/17/1982

RPI 617

Exigência - art. 36 da LPI

#6.1

05/25/1982

RPI 605

Carta-patente expirada

#21.1

06/21/1994

RPI 1229

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