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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8102391

Type

Invention Patent

Filing

04/20/1981

Publication

12/22/1981

Progress at the INPI

  1. Filing04/20/81
  2. Publication12/22/81
  3. Examination01/10/84
  4. Allowance05/07/85
  5. Grant12/31/85
  6. Expired10/01/96

The letters patent expired on 10/01/1996: 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: 12/31/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

U. C. (pessoa física)

US

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Inventors

D. G. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/31/1985

RPI 793

Notificação para pagamento de retribuição

#13.1

08/27/1985

RPI 775

Deferimento

#9.1

05/07/1985

RPI 759

Exigência - art. 36 da LPI

#6.1

01/08/1985

RPI 742

Exigência - art. 36 da LPI

#6.1

07/10/1984

RPI 716

Solicitação de exame técnico

#4.1

01/10/1984

RPI 690

Publicação do pedido de patente

#3.1

12/22/1981

RPI 583

Carta-patente expirada

#21.1

10/01/1996

RPI 1348

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