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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE 3,3', 5-TRIBROMO-2,2',6,6'-TETRA (ALQUILA PRIMÁRIA) BIFENOL E COMPOSTOS RELACIONADOS

Em AnáliseInvention Patent

Application data

Number

PI8706028

Type

Invention Patent

Filing

02/19/1987

Publication

04/05/1988

Progress at the INPI

  1. Filing02/19/87
  2. Publication04/05/88
  3. Examination11/07/89
  4. Allowance06/20/95
  5. Grant04/30/96
  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: 11/07/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Ciba Specialty Chemicals Holding Inc .- Ciba Spezialitätenchemie Holding Ag - Ciba Spécialités Chimiques Holding SA

CH

The Dow Chemical Company

US

See this company's full portfolio

Inventors

A. M. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

831.400 · 02/20/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

15.9

11/07/1989

RPI 994

Solicitação de exame técnico

#4.1

11/07/1989

RPI 994

Notificação de entrada na fase nacional - PCT

#1.3

04/05/1988

RPI 911

Carta-patente expirada

#21.1

Patente extinta em 19/02/2002

07/29/2008

RPI 1960

Transferência deferida

#25.1

Transferido Por Cessão de: The Dow Chemical Company

08/10/1999

RPI 1492

Concessão da patente

#16.1

04/30/1996

RPI 1326

Notificação para pagamento de retribuição

#13.1

10/31/1995

RPI 1300

Deferimento

#9.1

06/20/1995

RPI 1281

Exigência - art. 36 da LPI

#6.1

02/22/1994

RPI 1212

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