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Official data from INPI

PROCESSO PARA PREPARAR POLIAZAMACROCICLOS MONO-N-ALQUILADOS

Arquivada/ExtintaInvention PatentPCT · US1989005784

Application data

Number

PI8907277

Type

Invention Patent

Filing

12/15/1989

Publication

03/26/1991

PCT

US1989005784

Progress at the INPI

  1. Filing12/15/89
  2. Publication03/26/91
  3. Examination08/27/91
  4. Allowance11/11/97
  5. Grant08/22/00
  6. Expired01/02/13

The letters patent expired on 01/02/2013: 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: 01/02/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Dow Chemical Company

US

See this company's full portfolio

Inventors

W. J. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

289.163 · 12/22/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 22/08/2010

01/02/2013

RPI 2191

Concessão da patente

#16.1

08/22/2000

RPI 1546

Deferimento

#9.1

11/11/1997

RPI 1406

Exigência - art. 36 da LPI

#6.1

07/16/1996

RPI 1337

Solicitação de exame técnico

#4.1

08/27/1991

RPI 1082

Notificação de entrada na fase nacional - PCT

#1.3

03/26/1991

RPI 1060

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