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Official data from INPI

PROCESSO E COMPOSIÇÕES PARA REMOÇÃO DE MATERIAL ORGÂNICO INDESEJÁVEL.

Em AnáliseInvention Patent

Application data

Number

PI8400175

Type

Invention Patent

Filing

01/16/1984

Publication

08/21/1984

Progress at the INPI

  1. Filing01/16/84
  2. Publication08/21/84
  3. Examination08/19/86
  4. Allowance05/25/93
  5. Grant10/26/93
  6. Expired07/08/08

The letters patent expired on 07/08/2008: 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

American Cyanamid Company

US

See this company's full portfolio

Inventors

A. P. (pessoa física)

US

D. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

458,229 · 01/17/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Conhecimento de parecer técnico

#7.1

07/19/1988

RPI 926

Solicitação de exame técnico

#4.1

08/19/1986

RPI 826

Publicação do pedido de patente

#3.1

08/21/1984

RPI 722

Pedido de patente depositado

#2.1

03/20/1984

RPI 700

Carta-patente expirada

#21.1

Patente extinta em 16/01/99

07/08/2008

RPI 1957

Concessão da patente

#16.1

10/26/1993

RPI 1195

Deferimento

#9.1

05/25/1993

RPI 1173

Exigência - art. 36 da LPI

#6.1

10/22/1991

RPI 1090

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