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Official data from INPI

SILENCIOSO

Em AnáliseInvention Patent

Application data

Number

PI8802321

Type

Invention Patent

Filing

05/12/1988

Publication

12/13/1988

Progress at the INPI

  1. Filing05/12/88
  2. Publication12/13/88
  3. Examination05/30/89
  4. Allowance10/15/91
  5. Grant06/30/92
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 05/30/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Tenneco Automotive Inc

US

Tennessee Gas Pipeline Company

US

See this company's full portfolio

Inventors

D. D. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

050.152 · 05/14/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

05/30/1989

RPI 971

Publicação do pedido de patente

#3.1

12/13/1988

RPI 947

Pedido de patente depositado

#2.1

10/04/1988

RPI 937

Carta-patente expirada

#21.1

Patente extinta em 12/05/2003

09/02/2008

RPI 1965

Transferência deferida

#25.1

Transferido de: Tennessee Gas Pipeline Company

12/29/1998

RPI 1460

Alteração de sede deferida

#25.7

Alterada a sede conforme petição nº01835 de 22/08/97.

11/10/1998

RPI 1453

Concessão da patente

#16.1

06/30/1992

RPI 1126

Notificação para pagamento de retribuição

#13.1

02/18/1992

RPI 1107

Deferimento

#9.1

10/15/1991

RPI 1089

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