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Official data from INPI

PROCESSO DE PREPARAÇÃO DE UMA HIDROXIAMIDA TERMINADA EM TIOL, PROCESSO DE POLIMERIZAÇÃO COM TRANSFERÊNCIA DE CADEIA, E, PROCESSO DE FORMAÇÃO DE UM OLIGÔMERO REATIVO.

Arquivada/ExtintaInvention Patent

Application data

Number

PI9003868

Type

Invention Patent

Filing

08/08/1990

Publication

09/03/1991

Progress at the INPI

  1. Filing08/08/90
  2. Publication09/03/91
  3. Examination11/03/93
  4. Allowance03/31/98
  5. Grant12/29/98
  6. Expired01/22/13

The letters patent expired on 01/22/2013: 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: 01/22/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Rohm And Haas Company

US

See this company's full portfolio

Inventors

A. G. (pessoa física)

US

W. E. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

392,491 · 08/11/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 08/08/2010

01/22/2013

RPI 2194

Concessão da patente

#16.1

12/29/1998

RPI 1460

Deferimento

#9.1

03/31/1998

RPI 1423

Exigência - art. 36 da LPI

#6.1

03/25/1997

RPI 1373

Solicitação de exame técnico

#4.1

11/03/1993

RPI 1196

Publicação do pedido de patente

#3.1

09/03/1991

RPI 1083

Pedido de patente depositado

#2.1

02/13/1991

RPI 1054

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