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Official data from INPI

PROCESSO PARA PREPARAR UM POLÍMERO ENXERTADO DE FUNÇÃO ISOCIANATO, E, COMPOSIÇÃO RETICULÁVEL MELHORADA.

Arquivada/ExtintaInvention Patent

Application data

Number

PI9103611

Type

Invention Patent

Filing

08/22/1991

Publication

05/12/1992

Progress at the INPI

  1. Filing08/22/91
  2. Publication05/12/92
  3. Examination06/07/94
  4. Allowance09/08/99
  5. Grant03/08/00
  6. Expired06/04/13

The letters patent expired on 06/04/2013: 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: 06/04/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

American Cyanamid Company

US

See this company's full portfolio

Inventors

H. L. (pessoa física)

US

L. W. (pessoa física)

US

M. F. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

07/571,801 · 08/23/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinte em 22/08/2011

06/04/2013

RPI 2213

Concessão da patente

#16.1

03/08/2000

RPI 1522

Deferimento

#9.1

09/08/1999

RPI 1496

Exigência - art. 36 da LPI

#6.1

03/30/1999

RPI 1473

Solicitação de exame técnico

#4.1

06/07/1994

RPI 1227

Publicação do pedido de patente

#3.1

05/12/1992

RPI 1119

Pedido de patente depositado

#2.1

10/01/1991

RPI 1087

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