Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE 2,3-DIMETILBUTANO-2,3-DIOL

ConcedidaInvention Patent

Talk to an expert

Application data

Number

PI8202347

Type

Invention Patent

Filing

04/23/1982

Publication

04/05/1983

View on INPI

Progress at the INPI

Filing04/23/82
Publication04/05/83
Examination06/25/85
Allowance04/08/86
Grant10/29/86
Terminated06/26/90

The patent was granted on 10/29/1986 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 10/29/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

B. A. (pessoa física)

See this company's full portfolio

Inventors

H. W. (pessoa física)

K. W. (pessoa física)

Technical data

IPC Classification

C07C 29/48 C07C 31/20

Priority claims

P 31 16 294.0 · 04/24/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/29/1986

RPI 836

Notificação para pagamento de retribuição

#13.1

08/12/1986

RPI 825

Deferimento

#9.1

04/08/1986

RPI 807

Solicitação de exame técnico

#4.1

06/25/1985

RPI 766

Publicação do pedido de patente

#3.1

04/05/1983

RPI 650

Pedido de patente depositado

#2.1

06/15/1982

RPI 608

Anuidade - prazo legal encerrado

#18.2

06/26/1990

RPI 1024

From the same holder

112026017689 112026019562 112026019538 112026018907 112026018443 112026018909 112026012464 112026016095

Same category

PP1101201 PP1101199 "COMPOSTO, PROCESSO PARA A PREPARAÇÃO DO SAL DE Na DO (-)-ENANTIOMERO DE OMEPRAZOL, PREPARAÇÃO FARMACÉUTICA E USO DE UM COMPOSTO.PP1101197 PROTEÍNAS QUE LIGAM TNF PP1101194 DERIVADOS CONDENSADOS DO BENZOPIRROL COMO ANTAGONISTAS RECEPTORES DO 5-HT4 PP1101192

Explore category

Patent monitoring

Track this patent in real time.

Receive alerts on INPI events, decisions, and expiry dates for your portfolio.