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Official data from INPI

VÁLVULA EXPIRATÓRIA APERFEIÇOADA

Em AnáliseInvention Patent

Application data

Number

PI8806464

Type

Invention Patent

Filing

12/05/1988

Publication

03/21/1989

Progress at the INPI

  1. Filing12/05/88
  2. Publication03/21/89
  3. Examination11/21/89
  4. Allowance08/24/93
  5. Grant06/28/94
  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: 11/21/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Oxigel Materiais Hospitalares Indústria e Comércio Ltda

SP, BR

See this company's full portfolio

Inventors

A. L. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

11/21/1989

RPI 996

Publicação antecipada

#3.2

03/21/1989

RPI 961

Pedido de patente depositado

#2.1

03/14/1989

RPI 960

Carta-patente expirada

#21.1

Patente extinta em 05/12/2003

09/02/2008

RPI 1965

Republicação - classificação IPC

#15.11

03/01/1995

RPI 1265

Concessão da patente

#16.1

06/28/1994

RPI 1230

Notificação para pagamento de retribuição

#13.1

02/08/1994

RPI 1210

Deferimento

#9.1

08/24/1993

RPI 1186

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