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Official data from INPI

SENSOR E INDICADOR POLIMÉRICO FLUORESCENTE PARA DETERMINAR A CONCENTRAÇÃO DE UMA SUBSTÂNCIA DISSOLVIDO EM UM MEIO AQUOSO

Em AnáliseInvention Patent

Application data

Number

PI8700677

Type

Invention Patent

Filing

02/13/1987

Publication

12/15/1987

Progress at the INPI

  1. Filing02/13/87
  2. Publication12/15/87
  3. Examination11/21/89
  4. Allowance11/17/92
  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: 11/21/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Howmedica Inc

US

Pfizer Hospital Products Group, Inc.

US

Inventors

D. R. (pessoa física)

US

R. M. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

828.350 · 02/13/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

11/21/1989

RPI 996

Publicação do pedido de patente

#3.1

12/15/1987

RPI 895

Pedido de patente depositado

#2.1

06/23/1987

RPI 870

Carta-patente expirada

#21.1

Patente extinta em 13/02/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

06/29/1993

RPI 1178

14.4

03/23/1993

RPI 1164

Deferimento

#9.1

11/17/1992

RPI 1146

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