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Official data from INPI

CABEÇA DE IMPRESSÃO ACÚSTICA.

PublicadaInvention Patent

Application data

Number

PI8706818

Type

Invention Patent

Filing

12/15/1987

Publication

07/19/1988

Progress at the INPI

  1. Filing12/15/87
  2. Publication07/19/88
  3. Examination09/18/90
  4. Allowance10/06/92
  5. Grant06/29/93
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 07/19/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

X. C. (pessoa física)

US

See this company's full portfolio

Inventors

B. K. (pessoa física)

US

C. Q. (pessoa física)

US

S. E. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

944,698 · 12/19/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

07/19/1988

RPI 926

Pedido de patente depositado

#2.1

04/05/1988

RPI 911

Carta-patente expirada

#21.1

Patente extinta em 15/12/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

06/29/1993

RPI 1178

Notificação para pagamento de retribuição

#13.1

03/02/1993

RPI 1161

Deferimento

#9.1

10/06/1992

RPI 1140

Solicitação de exame técnico

#4.1

09/18/1990

RPI 1033

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